Publikationen Positronenmikroskopie PLEBS/SPM

2019

Reversible Optical Writing and Data Storage in an Anthracene-Loaded Metal–Organic Framework
M. Tu, H. Reinsch, S. Rodríguez-Hermida, R. Verbeke, T. Stassin, W. Egger, M. Dickmann, B. Dieu, J. Hofkens, I.F.J. Vankelecom, N. Stock and R. Ameloot; Angewandte Chemie International Edition 58 (0) (2019) 2423-2427.
Full elemental depth-profiling with nanoscale resolution: The potential of Elastic Recoil Detection (ERD) in membrane science
R. Verbeke, A. Bergmaier, S. Eschbaumer, H. Mariën, G. Dollinger and I. Vankelecom; Journal of Membrane Science 572 (2019) 102-109.

2018

Increasing Membrane Permeability by Increasing the Polymer Crystallinity: The Unique Case of Polythiophenes
C. Van Goethem, M. Mulunda, R. Verbeke, T. Koschine, M. Wübbenhorst, Z. Zhang, E. Nies, M. Dickmann, W. Egger, I. Vankelecom and G. Koeckelberghs; Macromolecules 51 (23) (2018) 9943-9950.
The role of MOFs in Thin-Film Nanocomposite (TFN) membranes
C. Van Goethem, R. Verbeke, M. Pfanmöller, T. Koschine, M. Dickmann, T. Timpel-Lindner, W. Egger, S. Bals and I. Vankelecom; Journal of Membrane Science 563 (2018) 938-948.
Real-scale chlorination at pH4 of BW30 TFC membranes and their physicochemical characterization
R. Verbeke, V. Gómez, T. Koschine, S. Eyley, A. Szymczyk, M. Dickmann, T. Stimpel-Lindner, W. Egger, W. Thielemans and I. Vankelecom; Journal of Membrane Science 551 (2018) 123-135.

2017

Ein Szintillationsdetektor für die Positronenannihilation zur Korrelation von Lebensdauer und 3D-Impuls
Ulrich Ackermann; Dissertation, Universität der Bundeswehr München, 2017.
Point defects in ZnO crystals grown by various techniques
J. Čížek, M. Vlček, P. Hruška, F. Lukáč, O. Melikhova, W. Anwand, F. Selim, C. Hugenschmidt and W. Egger; Journal of Physics: Conference Series 791 (1) (2017) 012017.
Radio Frequency Energy Elevation and Characterization of a Pulsed Positron Microbeam
Marcel Dickmann; Dissertation, Universität der Bundeswehr München, 2017.
New insights into the nanostructure of innovative thin film solar cells gained by positron annihilation spectroscopy
S.W.H. Eijt, W. Shi, A. Mannheim, M. Butterling, H. Schut, W. Egger, M. Dickmann, C. Hugenschmidt, B. Shakeri, R.W. Meulenberg, V. Callewaert, R. Saniz, B. Partoens, B. Barbiellini, A. Bansil, J. Melskens, M. Zeman, A.H.M. Smets, M. Kulbak, G. Hodes, D. Cahen and E. Brück; Journal of Physics: Conference Series 791 (1) (2017) 012021.
Micrometer positron beam characterization at the Scanning Positron Microscope Interface
J. Mitteneder, M. Dickmann, G. Kögel, W. Egger, P. Sperr and G. Dollinger; Journal of Physics: Conference Series 791 (1) (2017) 012006.
Cellulose Nanofibrils Films: Molecular Diffusion through Elongated Sub-Nano Cavities
D. Roilo, C.A. Maestri, M. Scarpa, P. Bettotti, W. Egger, T. Koschine, R.S. Brusa and R. Checchetto; The Journal of Physical Chemistry C 121 (28) (2017) 15437-15447.
Electron capture by vacancy-type defects in carbon-doped GaN studied using monoenergetic positron beams
A. Uedono, T. Tanaka, N. Ito, K. Nakahara, W. Egger, C. Hugenschmidt, S. Ishibashi and M. Sumiya; Thin Solid Films 639 (2017) 78 - 83.
Aufbau und Test eines Lambda-Viertel-Resonators für das Scanning Positron Microscope Interface
Björn Wanja; Studienarbeit, Universität der Bundeswehr München, 2017.

2016

Position and time resolution measurements with a microchannel plate image intensifier: A comparison of monolithic and pixelated CeBr3 scintillators
U. Ackermann, S. Eschbaumer, A. Bergmaier, W. Egger, P. Sperr, C. Greubel, B. Löwe, P. Schotanus and G. Dollinger; Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 823 (2016) 56 - 64.
Four-dimensional positron age-momentum correlation
U. Ackermann, B. Löwe, M. Dickmann, J. Mitteneder, P. Sperr, W. Egger, M. Reiner and G. Dollinger; New Journal of Physics 18 (11) (2016) 113030.
Radio frequency elevator for a pulsed positron beam
M. Dickmann, J. Mitteneder, G. Kögel, W. Egger, P. Sperr, U. Ackermann, C. Piochacz and G. Dollinger; Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 821 (2016) 40 - 43.
Positron annihilation lifetime spectroscopy study of Kapton thin foils
G.S. Kanda, L. Ravelli, B. Löwe, W. Egger and D.J. Keeble; Journal of Physics D: Applied Physics 49 (2) (2016) 025305.

2015

Time- and energy-resolution measurements of BaF2, BC-418, LYSO and CeBr3 scintillators
U. Ackermann, W. Egger, P. Sperr and G. Dollinger; Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 786 (0) (2015) 5-11.
Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity
M.M. Khan, V. Filiz, T. Emmler, V. Abetz, T. Koschine, K. Rätzke, F. Faupel, W. Egger and L. Ravelli; Membranes 5 (2) (2015) 214.
Correlation of gas permeation and free volume in new and used high free volume thin film composite membranes
T. Koschine, K. Rätzke, F. Faupel, M. Khan, T. Emmler, V. Filiz, V. Abetz, L. Ravelli and W. Egger; Journal of Polymer Science, Part B: Polymer Physics 53 (3) (2015) 213-217.
Erste ortsauflösende Positronen Lebensdauerspektroskopie am Scanning-Positron-Microscope Interface
Johannes Mitteneder; Masters-Thesis, Hochschule München, 2015.

2014

Interphase of a polymer at a solid interface
H.J. Butt, H. Duran, W. Egger, F. Faupel, V. Harmandaris, S. Harms, K. Johnston, K. Kremer, F.Y. Lin, L. Lue, C. Ohrt, K. Rätzke, L. Ravelli, W. Steffen and S.D.B. Vianna; Macromolecules 47 (23) (2014) 8459-8465.
Interphases in polymer solid-contacts and nanocomposites probed by positron annihilation lifetime spectroscopy
C. Ohrt, T. Koschine, S. Harms, F. Faupel, K. Rätzke, W. Egger, L. Ravelli, L. Willner and G. Schneider; Soft Materials 12 (2014) S135-S141.
Improvement of the Pulsed Low Energy Positron System (PLEPS) for complex problems in materials science
Luca Ravelli; Dissertation, Universität der Bundeswehr München, Fakultät für Luft- und Raumfahrttechnik, 2014.
Erprobung von Szintillator-Detektoren bei tiefen Temperaturen
Johannes Schütze; Masters-Thesis, Universität der Bundeswehr München, 2014.
PLEPS study of ions implanted RAFM steels
S. Sojak, V. Slugeň, W. Egger, L. Ravelli, M. Petriska, J. Veterníková, M. Stacho and V. Sabelová; Journal of Physics: Conference Series 505 (1) (2014) 012016.
Structural evolution and medium range order in permanently densified vitreous SiO2
M. Zanatta, G. Baldi, R.S. Brusa, W. Egger, A. Fontana, E. Gilioli, S. Mariazzi, G. Monaco, L. Ravelli and F. Sacchetti; Physical Review Letters 112 (4) (2014) 045501.

2013

Development of a new time and position resolving detector for the pulsed low energy positron system PLEPS
U. Ackermann, W. Egger, P. Sperr, B. Löwe, L. Ravelli, G. Kögel, G. Dollinger and O. Jagutzki; Journal of Physics: Conference Series 443 (1) (2013) 012095.
Surfaces of colloidal PbSe nanocrystals probed by thin-film positron annihilation spectroscopy
L. Chai, W. Al-Sawai, Y. Gao, A. Houtepen, P. Mijnarends, B. Barbiellini, H. Schut, L. Van Schaarenburg, M. Van Huis, L. Ravelli, W. Egger, S. Kaprzyk, A. Bansil and S. Eijt; APL Materials 1 (2) (2013) 022111.
Nonstoichiometry accommodation in SrTiO3 thin films studied by positron annihilation and electron microscopy
D. Keeble, S. Wicklein, L. Jin, C. Jia, W. Egger and R. Dittmann; Physical Review B - Condensed Matter and Materials Physics 87 (19) (2013) 195409.
A position sensitive germanium detector for the measurement of angular deviation of annihilation radiation
B. Löwe, M. Reiner, W. Egger, C. Hugenschmidt and G. Dollinger; Journal of Physics: Conference Series 443 (1) (2013) 012098.
Study of Positronium formation in nano-channelled silicon as a function of sample temperature
S. Mariazzi, L. Dinoto, L. Ravelli, W. Egger and R. Brusa; Journal of Physics: Conference Series 443 (1) (2013) 012061.
Geant4 simulation of the effect of backscattered positrons on the lifetime spectra of PLEPS
L. Ravelli, B. Löwe, W. Egger, G. Kögel, P. Sperr and G. Dollinger; Journal of Physics: Conference Series 443 (1) (2013) 012096.
Untersuchung des zeitlichen Verhaltens von Siliziumphotomultipliern
Johannes Schütze; Bachelors-Thesis, Universität der Bundeswehr München, 2013.
Microstructural examination of reactor pressure vessel steels by positron annihilation point of view
V. Slugeň, H. Hein, S. Sojak, W. Egger, M. Pavúk, J. Veterníková, M. Petriska, V. Sabelová and R. Hinca; Progress in Nuclear Energy 62 (2013) 1-7.
PLEPS study of ion implanted and annealed Fe-11.62% Cr alloys
S. Sojak, V. Sluge, W. Egger, L. Ravelli, M. Petriska, S. Stanek, M. Sahul, M. Skarba, P. Priputen, M. Stacho, J. Veterníková, R. Hinca and V. Sabelová; Journal of Physics: Conference Series 443 (1) (2013) 012036.
Thermal annealing influence on ions implanted Fe-Cr model alloys
S. Sojak, V. Slugeň, V. Kršjak, W. Egger, L. Ravelli, M. Petriska, S. Stanček, M. Skarba, P. Priputen, K. Vitázek, M. Stacho, J. Veterníková and V. Sabelová; Materials Science Forum 733 (2013) 274-277.
On the interplay of point defects and Cd in non-polar ZnCdO films
A. Zubiaga, F. Reurings, F. Tuomisto, F. Plazaola, J. García, A. Kuznetsov, W. Egger, J. Zúñiga-Pérez and V. Muñoz-Sanjosé; Journal of Applied Physics 113 (2) (2013) 023512.

2012

Characterization of vacancy-type defects in heteroepitaxial GaN grown by low-energy plasma-enhanced vapor phase epitaxy
A. Calloni, R. Ferragut, A. Dupasquier, H. von Känel, A. Guiller, A. Rutz, L. Ravelli and W. Egger; Journal of Applied Physics 112 (2) (2012) 024510.
Aging and free volume in a polymer of intrinsic microporosity (PIM-1)
S. Harms, K. Rätzke, F. Faupel, N. Chaukura, P. Budd, W. Egger and L. Ravelli; Journal of Adhesion 88 (7) (2012) 608-619.
Niobium aggregation and vacancylike defect evolution in nanostructured Nb-doped Mg: Their role in the kinetics of the hydride-to-metal phase transformation
C. Macchi, C. Maurizio, R. Checchetto, S. Mariazzi, L. Ravelli, W. Egger, P. Mengucci, N. Bazzanella, A. Miotello, A. Somoza and R. Brusa; Physical Review B - Condensed Matter and Materials Physics 85 (21) (2012) 214117.
Charakterisierung von Siliziumphotomultipliern
Johannes Schütze and Christoph Hager; Studienarbeit, Universität der Bundeswehr München, 2012.
Different Chromium Content and Thermal Annealing Influence on Ions Implanted Fe-Cr Model Alloys
S. Sojak, V. Slugeň, V. Kršjak, W. Egger, L. Ravelli, M. Petriska, S. Stanček, M. Skarba, P. Priputen, K. Vitázek, M. Stacho, J. Veterníková and V. Sabelová; Physics Procedia 35 (2012) 80–85.

2011

Enhanced kinetics of hydride-metal phase transition in magnesium by vacancy clustering
R. Checchetto, N. Bazzanella, A. Kale, A. Miotello, S. Mariazzi, R. Brusa, P. Mengucci, C. Macchi, A. Somoza, W. Egger and L. Ravelli; Physical Review B - Condensed Matter and Materials Physics 84 (5) (2011) 054115.
Layer-resolved study of the Mg to MgH2 transformation in Mg-Ti films with short-range chemical order
S. Eijt, H. Leegwater, H. Schut, A. Anastasopol, W. Egger, L. Ravelli, C. Hugenschmidt and B. Dam; Journal of Alloys and Compounds 509 (SUPPL. 2) (2011) S567-S571.
Study of defects in an electroresistive Au/La2/3Sr 1/3MnO3/SrTiO3(001) heterostructure by positron annihilation
R. Ferragut, A. Dupaquier, S. Brivio, R. Bertacco and W. Egger; Journal of Applied Physics 110 (5) (2011) 053511.
Free volume changes on optical switching in azobenzene- polymethylmethacrylate blends studied by a pulsed low-energy positron beam
S. Harms, K. Rätzke, C. Pakula, V. Zaporojtchenko, T. Strunskus, W. Egger, P. Sperr and F. Faupel; Journal of Polymer Science, Part B: Polymer Physics 49 (6) (2011) 404-408.
Free volume distribution at the Teflon AF®/silicon interfaces probed by a slow positron beam
S. Harms, K. Rätzke, V. Zaporojtchenko, F. Faupel, W. Egger and L. Ravelli; Polymer 52 (2) (2011) 505-509.
Vacancy defects in CdTe thin films
D. Keeble, J. Major, L. Ravelli, W. Egger and K. Durose; Physical Review B - Condensed Matter and Materials Physics 84 (17) (2011) 174122.
Suppression of vacancy defects in epitaxial La-doped SrTiO 3 films
D. Keeble, B. Jalan, L. Ravelli, W. Egger, G. Kanda and S. Stemmer; Applied Physics Letters 99 (23) (2011) 232905.
Konstruktion und Aufbau einer positionierbaren, kollimierten Gammaquelle zur Kalibrierung eines gepixelten Germaniumdetektors für die Positronenannihilation
Ricardo Riedel; Studienarbeit, Universität der Bundeswehr München, 2011.
Fe-Cr alloys behavior after helium implantation
V. Slugen, V. Krsjak, W. Egger, M. Petriska, S. Sojak and J. Veternikova; Journal of Nuclear Materials 409 (2) (2011) 163-166.

2010

Structural characterization of H plasma-doped ZnO single crystals by positron annihilation spectroscopies
W. Anwand, G. Brauer, T. Cowan, D. Grambole, W. Skorupa, J. Čižek, J. Kuriplach, I. Procházka, W. Egger and P. Sperr; Physica Status Solidi (A) Applications and Materials Science 207 (11) (2010) 2415-2425.
Study of defects in implanted silica glass by depth profiling Positron Annihilation Spectroscopy
R. Brusa, S. Mariazzi, L. Ravelli, P. Mazzoldi, G. Mattei, W. Egger, C. Hugenschmidt, B. Löwe, P. Pikart, C. Macchi and A. Somoza; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 268 (19) (2010) 3186-3190.
Positron annihilation spectroscopy: A technique to probe the molecular level of nanofiltration membranes
A. Cano-Odena, P. Vandezande, K. Hendrix, R. Zaman, K. Mostafa, W. Egger, P. Sperr, J. De Baerdemaeker and I. Vankelecom; JOURNAL MISSING! (2010) 320-322.
Pulsed low-energy positron beams: A useful tool to investigate defect structures in deformed metals and alloys
W. Egger, P. Sperr, G. Kögel and H.-J. Gudladt; Journal of Physics: Conference Series 240 (2010) 012164.
Pulsed low-energy positron beams in materials sciences
W. Egger; In: R. Brusa, A. Dupasquier and A.P. Mills jr. (Eds.), Physics with many Positrons , Vol. 174 , p. 419-449 , IOS Press , 2010.
Positronium formation in porous materials for antihydrogen production
R. Ferragut, A. Calloni, A. Dupasquier, G. Consolati, F. Quasso, M. Giammarchi, D. Trezzi, W. Egger, L. Ravelli, M. Petkov, S. Jones, B. Wang, O. Yaghi, B. Jasinska, N. Chiodini and A. Paleari; Journal of Physics: Conference Series 225 (2010) 012007.
Free volume and swelling in thin films of poly(N-isopropylacrylamide) end-capped with N-butyltrithiocarbonate
S. Harms, K. Rätzke, F. Faupel, W. Egger, L. Ravello, A. Laschewsky, W. Wang and P. Müller-Buschbaum; Macromolecular Rapid Communications 31 (15) (2010) 1364-1367.
Identification of vacancy defects in a thin film perovskite oxide
D. Keeble, R. MacKie, W. Egger, B. Löwe, P. Pikart, C. Hugenschmidt and T. Jackson; Physical Review B - Condensed Matter and Materials Physics 81 (6) (2010) 064102.
Identification of A- and B-site cation vacancy defects in perovskite oxide thin films
D. Keeble, S. Wicklein, R. Dittmann, L. Ravelli, R. MacKie and W. Egger; Physical Review Letters 105 (22) (2010) 226102.
Divacancies and the hydrogenation of Mg-Ti films with short range chemical order
H. Leegwater, H. Schut, W. Egger, A. Baldi, B. Dam and S. Eijt; Applied Physics Letters 96 (12) (2010) 121902.
Ordered nanoporous membranes based on diblock copolymers with high chemical stability and tunable separation properties
X. Li, C.-A. Fustin, N. Lefèvre, J.-F. Gohy, S. Feyter, J. Baerdemaeker, W. Egger and I. Vankelecom; Journal of Materials Chemistry 20 (21) (2010) 4333-4339.
Experimental elucidation of vacancy complexes associated with hydrogen ion-induced splitting of bulk GaN
O. Moutanabbir, R. Scholz, U. Gösele, A. Guittoum, M. Jungmann, M. Butterling, R. Krause-Rehberg, W. Anwand, W. Egger and P. Sperr; Physical Review B - Condensed Matter and Materials Physics 81 (11) (2010) 115205.
Open volume in bioadhesive detected by positron annihilation lifetime spectroscopy
K. Rätzke, M. Wiegemann, M. Shaikh, S. Harms, R. Adelung, W. Egger and P. Sperr; Acta Biomaterialia 6 (7) (2010) 2690-2694.
In-vacancies in Si-doped InN
C. Rauch, F. Reurings, F. Tuomisto, T. Veal, C. McConville, H. Lu, W. Schaff, C. Gallinat, G. Koblmüller, J. Speck, W. Egger, B. Löwe, L. Ravelli and S. Sojak; Physica Status Solidi (A) Applications and Materials Science 207 (5) (2010) 1083-1086.
Irradiation-induced defects in InN and GaN studied with positron annihilation
F. Reurings, F. Tuomisto, W. Egger, B. Löwe, L. Ravelli, S. Sojak, Z. Liliental-Weber, R. Jones, K. Yu, W. Walukiewicz and W. Schaff; Physica Status Solidi (A) Applications and Materials Science 207 (5) (2010) 1087-1090.

2009

Characterization of ZnO nanostructures: A challenge to positron annihilation spectroscopy and other methods
G. Brauer, W. Anwand, D. Grambole, W. Egger, P. Sperr, I. Beinik, L. Wang, C. Teichert, J. Kuriplach, J. Lang, S. Zviagins, E. Cizmar, C.C. Ling, Y.F. Hsu, Y.Y. Xi, X. Chen, A.B. Djurisic and W. Skorupa; Physica Status Solidi (C) Current Topics in Solid State Physics 6 (11) (2009) 2556-2560.
Probing the Molecular Level of Polyimide-Based Solvent Resistant Nanofiltration Membranes with Positron Annihilation Spectroscopy
A. Cano-Odena, P. Vandezande, K. Hendrix, R. Zaman, K. Mostafa, W. Egger, P. Sperr, J. De Baerdemaeker and I.F.J. Vankelecom; Journal of Physical Chemistry B 113 (30) (2009) 10170–10176.
Hydrogen-induced defects in Pd films
J. Cizek, I. Prochazka, O. Melikhova, M. Vlach, N. Zaludova, G. Brauer, W. Anwand, W. Egger, P. Sperr, C. Hugenschmidt, R. Gemma, A. Pundt and R. Kirchheim; Physica Status Solidi (C) Current Topics in Solid State Physics 6 (11) (2009) 2364-2366.
Nature of defects induced by Au implantation in hexagonal silicon carbide single crystals
A. Gentils, M.-F. Barthe, W. Egger and P. Sperr; AIP Conference Proceedings 1099 (2009) 891-895.
Microstructural study of He-implanted Fe-Cr alloys with the use of conventional lifetime technique and pulsed low energy positron beam
V. Kršjak, V. Slugeň, M. Petriska, S. Sojak and W. Egger; Physica Status Solidi (C) Current Topics in Solid State Physics 6 (11) (2009) 2339-2341.
Helium implanted FeCr alloys studied by positron annihilation lifetime technique
V. Kršjak, W. Egger, M. Petriska and S. Sojak; Problems of Atomic Science and Technology 4 (1) (2009) 109-115.
Positron annihilation studies on the nature and thermal behaviour of irradiation induced defects in tungsten
P.E. Lhuillier, M.F. Barthe, P. Desgardin, W. Egger and P. Sperr; Physica Status Solidi (C) Current Topics in Solid State Physics 6 (11) (2009) 2329-2332.
Direct evidence by positron annihilation spectroscopy of defect distributions deeper than Rp in Ar+ implanted silica glass
P. Mazzoldi, G. Mattei, L. Ravelli, W. Egger, S. Mariazzi and R.S. Brusa; Journal of Physics D: Applied Physics 42 (11) (2009) 115418.
Advanced Fe-Cr alloys studied by pulsed low energy positron system before and after helium ions implantation
S. Sojak, V. Kršjak and W. Egger; American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP 5 (2009) 469-472.

2008

Investigations of epoxy-based adhesives with PLEPS
W. Egger, P. Sperr, G. Kögel, M. Wetzel and H.-J. Gudladt; Applied Surface Science 255 (1) (2008) 209-212.
On the defect pattern evolution in sapphire irradiated by swift ions in a broad fluence range
P.M. Gordo, L. Liszkay, Z. Kajcsos, K. Havancsák, V.A. Skuratov, G. Kögel, P. Sperr, W. Egger, A.P. de Lima and M.F.F. Marques; Applied Surface Science 255 (1) (2008) 254-256.
Surface and bulk investigations at the high intensity positron beam facility NEPOMUC
C. Hugenschmidt, G. Dollinger, W. Egger, G. Kögel, B. Löwe, J. Mayer, P. Pikart, C. Piochacz, R. Repper, K. Schreckenbach, P. Sperr and M. Stadlbauer; Applied Surface Science 255 (1) (2008) 29-32.
A positron remoderator for the high intensity positron source NEPOMUC
C. Piochacz, G. Kögel, W. Egger, C. Hugenschmidt, J. Mayer, K. Schreckenbach, P. Sperr, M. Stadlbauer and G. Dollinger; Applied Surface Science 255 (1) (2008) 98-100.
Status of the pulsed low energy positron beam system (PLEPS) at the Munich Research Reactor FRM-II
P. Sperr, W. Egger, G. Kögel, G. Dollinger, C. Hugenschmidt, R. Repper and C. Piochacz; Applied Surface Science 255 (1) (2008) 35-38.

2007

Pulsed low energy positron system (PLEPS) at the Munich research reactor FRMII
W. Egger, P. Sperr, G. Kögel and G. Dollinger; Physica Status Solidi (C) Current Topics in Solid State Physics 4 (10) (2007) 3969-3972.
Near surface stress determination in Kr-implanted polycrystalline titanium by the X-ray sin2Ψ-method
M. Härting, S. Nsengiyumva, A. Raji, G. Dollinger, P. Sperr, S. Naidoo, T. Derry, C. Comrie and D. Britton; Surface and Coatings Technology 201 (19-20 SPEC. ISS.) (2007) 8237-8241.
Implementation of the Munich scanning positron microscope at the positron source NEPOMUC
C. Piochacz, W. Egger, C. Hugenschmidt, G. Kögel, K. Schreckenbach, P. Sperr and G. Dollinger; Physica Status Solidi (C) Current Topics in Solid State Physics 4 (10) (2007) 4028-4031.

2006

Microstructural defect characterisation of a-Si:H deposited by low temperature HW-CVD on paper substrates
D.T. Britton, M. Härting, D. Knoesen, Z. Sigcau, F.P. Nemalili, T.P. Ntsoane, P. Sperr, W. Egger and M. Nippus; Thin Solid Films 501 (1-2) (2006) 79-83.
Decoration of buried surfaces in Si detected by positron annihilation spectroscopy
R. Brusa, C. Macchi, S. Mariazzi, G. Karwasz, W. Egger, P. Sperr and G. Kögel; Applied Physics Letters 88 (1) (2006) 011920.
Analysis of defect configurations with positron lifetime measurements by pulsed low energy beams
W. Egger, G. Kögel, P. Sperr and H.-J. Gudladt; International Journal of Materials Research 97 (12) (2006) 1633-1641.
Positron lifetime and microstructural characterisation of a-Si:H deposited by low temperature HW-CVD on paper substrates
M. Härting, D. Britton, D. Knoesen and W. Egger; Applied Surface Science 252 (9) (2006) 3188-3193.
Czochralski-grown nitrogen-doped silicon: Electrical properties of MOS structures; A positron annihilation study
L. Harmatha, M. Ťapajna, V. Slugeň, P. Ballo, P. Písečný, J. Šik and G. Kögel; Microelectronics Journal 37 (4) (2006) 283-289.
Depth-Resolved Analysis of the Aging Behavior of Epoxy Thin Films by Positron Spectroscopy
J. Kanzow, F. Faupel, W. Egger, P. Sperr, G. Kögel, C. Wehlack, A. Meiser and W. Possart; In: W. Possart (Ed.), Adhesion: Current Research and Applications , Chapter 29 , p. 465-477 , Wiley-VCH , 2006.
Planned positron experiments at FRM-II
G. Kögel and G. Dollinger; Applied Surface Science 252 (9) (2006) 3111-3120.
Electrical properties of MOS structures on nitrogen-doped Czochralski-grown silicon: A positron annihilation study
V. Slugeň, L. Harmatha, M. Ťapajna, P. Ballo, P. Písečný, J. Šik, G. Kögel and V. Kršjak; Applied Surface Science 252 (9) (2006) 3201-3208.

2005

Absence of positronium formation in clean buried nanocavities in p-type silicon
R.S. Brusa, C. Macchi, S. Mariazzi, G.P. Karwasz, W. Egger, P. Sperr and G. Kögel; Physical Review B - Condensed Matter and Materials Physics 71 (24) (2005) 245320.
Specific defects and thermomechanical properties of electrodeposited Cu foils
V. Gröger, G. Khatabi, A. Kotas-Betzwar, P. Zimprich, B. Mikulowski, G. Boczkal, W. Egger, H.D. Merchant and B. Weiss; Archives of Metallurgy and Materials 50 (1) (2005) 167-174.

2004

Free volume determination of azobenzene-PMMA copolymer by a pulsed low-energy positron lifetime beam with in-situ UV illumination
J. Algers, P. Sperr, W. Egger, L. Liszkay, G. Kögel, J. de Baerdemaeker and F.H.J. Maurer; Macromolecules 37 (21) (2004) 8035-8042.
Thermal Isomerization of Azo-Benzene in PMMA Probed by a Pulsed Low-Energy Positron Beam
J. Algers, V. Skeppstedt, P. Sperr, W. Egger and F.H.J. Maurer; Materials Science Forum 445-446 (2004) 262-264.
Defect Characterization of the Structure-Growth Zone-Model for Sputter Deposited Cu Films
J. De Baerdemaeker, C. Dauwe, D. Segers, C. Detavernier, D. Deduytsche, W. Egger and P. Sperr; Materials Science Forum 445-446 (2004) 69-71.
Studies of light alloys by positron annihilation techniques
A. Dupasquier, G. Kögel and A. Somoza; Acta Materialia 52 (16) (2004) 4707-4726.
Measurements of defect structures of a cyclically deformed Al-Mg-Si alloy by positron annihilation techniques
W. Egger, G. Kögel, P. Sperr, W. Triftshäuser, J. Bär, S. Rödling and H.-J. Gudladt; Materials Science and Engineering A 387-389 (1-2 SPEC. ISS.) (2004) 317-320.
Positron Annihilation Spectroscopy in Polymers
F. Faupel, J. Kanzow, K. Gunther-Schade, C. Nagel, P. Sperr and G. Kögel; Materials Science Forum 445-446 (2004) 219-223.
Comparison of Vacancy Creation by Nuclear and Electronic Processes in Silicon Irradiated with Swift Kr and Bi Ions
P.M. Gordo, L. Liszkay, K. Havancsák, V.A. Skuratov, P. Sperr, W. Egger, C. Lopes Gil, A.P. de Lima and Z. Kajcsos; Materials Science Forum 445-446 (2004) 93-95.
NEPOMUC - the New Positron Beam Facility at FRM II
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr, B. Straßer and W. Triftshäuser; Materials Science Forum 445-446 (2004) 480-482.
The neutron induced positron source at Munich - NEPOMUC
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr, B. Straßer and W. Triftshäuser; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 221 (1-4) (2004) 160-164.
Investigation of Fatigue Cracks in an Al-Based Alloy by Means of Pulsed Positron (Micro-)Beams
G. Kögel, W. Egger, S. Rödling and H.-J. Gudladt; Materials Science Forum 445-446 (2004) 126-128.
Vacancy defects in epitaxial InN: Identification and electrical properties
A. Laakso, J. Oila, A. Kemppinen, K. Saarinen, W. Egger, L. Liszkay, P. Sperr, H. Lu and W.J. Schaff; Journal of Crystal Growth 269 (1) (2004) 41-49.
Positron Beam Splitter at the High Intensity Positron Beam in Munich
L. Liszkay, G. Kögel, P. Sperr, W. Egger, C. Hugenschmidt and W. Triftshäuser; Materials Science Forum 445-446 (2004) 492-494.
Influence of layer thickness on the formation of in vacancies in InN grown by molecular beam epitaxy
J. Oila, A. Kemppinen, A. Laakso, K. Saarinen, W. Egger, L. Liszkay, P. Sperr, H. Lu and W.J. Schaff; Applied Physics Letters 84 (9) (2004) 1486-1488.
Defect structural characterization of organic polymer layers
O. Osiele, D. Britton, M. Härting, P. Sperr, M. Topic, S. Shaheen and H. Branz; Journal of Non-Crystalline Solids 338-340 (1 SPEC. ISS.) (2004) 612-616.
Positron Annihilation Characteristics of Polymer Films for Photovoltaic Applications
O. Osiele, D. Britton, M. Härting, P. Sperr, M. Topic, S. Shaheen and H. Branz; Materials Science Forum 445-446 (2004) 337-339.
Positron annihilation Investigations of defects in copper alloys selected for nuclear fusion technology
V. Slugeň, J. Kuriplach, P. Ballo, P. Domonkos, G. Kögel, P. Sperr, W. Egger, W. Triftshäuser, V.M. Domankova, P. Kovac, I. Vavra, S. Stancek, M. Petriska and A. Zeman; Fusion Engineering and Design 70 (2) (2004) 141-153.
Investigation of Defects in Copper Alloys Selected for Nuclear Fusion Technology
V. Slugeň, G. Kögel, J. Kuriplach, P. Ballo, P. Sperr, W. Egger, W. Triftshäuser, P. Domonkos, M. Petriska and A. Zeman; Materials Science Forum 445-446 (2004) 183-185.
Positron Microprobes
W. Triftshäuser; Materials Science Forum 445-446 (2004) 452-456.

2003

Median implantation depth and implantation profile of 3-18 keV positrons in amorphous polymers
J. Algers, P. Sperr, W. Egger, G. Kögel and F. Maurer; Physical Review B - Condensed Matter and Materials Physics 67 (12) (2003) 1254041-1254047.
Fatigue and fracture-induced defect structures of metals investigated by positron microscopy
W. Egger, G. Kögel, P. Sperr, W. Triftshäuser, J. Bär, S. Rödling and H.-J. Gudladt; Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques 94 (6) (2003) 687-693.
Positron source based on neutron capture
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr and W. Triftshäuser; Radiation Physics and Chemistry 68 (3-4) (2003) 669-671.
Study of radiation defects in semiconductors by means of positron annihilation
R. Krause-Rehberg, V. Bondarenko, F. Redmann, F. Borner, H. Feick, E. Weber, C. Da Via, W. Egger, G. Kögel, P. Sperr and W. Triftshäuser; In: Proceedings of the 3rd international Symposium on Material Chemistry in Nuclear Environment (Materials Chemistry MC’02) 36 (2003) 114-117 .

2002

Vacancy defects in as-polished and in high-fluence H+-implanted 6H-SiC detected by slow positron annihilation spectroscopy
M.-F. Barthe, P. Desgardin, L. Henry, C. Corbel, D. Britton, G. Kögel, P. Sperr, W. Triftshäuser, P. Vicente and L. Dicioccio; Materials Science Forum 389-393 (1) (2002) 493-496.
Shallow traps and positron dynamics in epitaxial silicon carbide
D. Britton, M.-F. Barthe, C. Corbel, P. Desgardin, W. Egger, P. Sperr, G. Kögel and W. Triftshäuser; Applied Surface Science 194 (1-4) (2002) 122-126.
Positron states in hydrogenated amorphous silicon
D. Britton, M. Härting, A. Hempel, G. Kögel, P. Sperr, W. Triftshäuser, M. Hempel and D. Knoesen; Journal of Non-Crystalline Solids 299-302 (Part 1) (2002) 249-253.
Vacancy clusters close to a fatigue crack observed with the München scanning positron microscope
W. Egger, G. Kögel, P. Sperr, W. Triftshäuser, S. Rödling, J. Bär and H.-J. Gudladt; Applied Surface Science 194 (1-4) (2002) 214-217.
The In-Pile Positron Source at the Munich Research Reactor FRM-II
C. Hugenschmidt, K. Schreckenbach, R. Repper and G. Kögel; In: Annual Meeting on Nuclear Technology 2002 Proceedings (2002) 519-522 .
Intense positron source at the Munich research reactor FRM-II
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr, B. Straßer and W. Triftshäuser; Applied Physics A: Materials Science and Processing 74 (SUPPL.I) (2002) S295-S297.
First platinum moderated positron beam based on neutron capture
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr and W. Triftshäuser; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 198 (3-4) (2002) 220-229.
Monoenergetic positron beam at the reactor based positron source at FRM-II
C. Hugenschmidt, G. Kögel, R. Repper, K. Schreckenbach, P. Sperr, B. Straßer and W. Triftshäuser; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 192 (1-2) (2002) 97-101.
Radiation-induced defects in 4H- And 6H-SiC epilayers studied by positron annihilation and deep-level transient spectroscopy
A. Kawasuso, M. Weidner, F. Redmann, T. Frank, R. Krause-Rehberg, G. Pensl, P. Sperr, W. Triftshäuser and H. Itoh; Materials Science Forum 389-393 (1) (2002) 489-492.
Microscopes/microprobes
G. Kögel; Applied Surface Science 194 (1-4) (2002) 200-209.
Improved defect profiling with slow positrons
R. Krause-Rehberg, F. Börner, F. Redmann, W. Egger, G. Kögel, P. Sperr and W. Triftshäuser; Applied Surface Science 194 (1-4) (2002) 210-213.
Investigation of defect distributions in neutron-irradiated and thermally treated reactor steels by positron annihilation
V. Slugen, G. Kögel, P. Sperr and W. Triftshäuser; Applied Surface Science 194 (1-4) (2002) 150-154.
Positron annihilation studies of neutron irradiated and thermally treated reactor pressure vessel steels
V. Slugen, G. Kögel, P. Sperr and W. Triftshäuser; Journal of Nuclear Materials 302 (2-3) (2002) 89-95.

2001

Negatively charged vacancy defects in 6H-SiC after low-energy proton implantation and annealing
M.-F. Barthe, D. Britton, C. Corbel, A. Hempel, L. Henry, P. Desgardin, W. Bauer-Kugelmann, G. Kögel, P. Sperr and W. Triftshäuser; Physica B: Condensed Matter 308-310 (2001) 668-670.
Latest version of the Munich pulsed low energy positron system
W. Bauer-Kugelmann, P. Sperr, G. Kögel and W. Triftshäuser; Materials Science Forum 363-365 (2001) 529-531.
Evidence for negatively charged vacancy defects in 6H-SiC after low-energy proton implantation
D. Britton, M.-F. Barthe, C. Corbel, A. Hempel, L. Henry, P. Desgardin, W. Bauer-Kugelmann, G. Kögel, P. Sperr and W. Triftshäuser; Applied Physics Letters 78 (9) (2001) 1234-1236.
Pulsed positron beam study of as-grown defects in epitaxial SiC
D. Britton, D. Gxawu, A. Hempel, M.-F. Barthe, L. Henry, P. Desgardin, C. Corbel, W. Bauer-Kugelmann, P. Sperr, G. Kögel and W. Triftshäuser; Materials Science Forum 363-365 (2001) 460-462.
Defect characterisation of PECVD-grown diamond
D. Britton, A. Hempel, M. Hempel, M. Härting, W. Bauer-Kugelmann and W. Triftshäuser; Materials Science Forum 363-365 (2001) 511-513.
Hopping transport of positrons in hydrogenated amorphous silicon
D. Britton, A. Hempel and W. Triftshäuser; Physical Review Letters 87 (21) (2001) 2174011-2174014.
Annealing and recrystallization of hydrogenated amorphous silicon
D. Britton, A. Hempel, M. Härting, G. Kögel, P. Sperr, W. Triftshäuser, C. Arendse and D. Knoesen; Physical Review B 64 (7) (2001) 075403.
Lifetime measurements with a scanning positron microscope
A. David, G. Kögel, P. Sperr and W. Triftshäuser; Physical Review Letters 87 (6) (2001) 674021-674024.
Investigation of stainless steel films sputtered on glass
J. De Baerdemaeker, T. Van Hoecke, S. Van Petegem, D. Segers, W. Bauer-Kugelmann, P. Sperr and G. Terwagne; Materials Science Forum 363-365 (2001) 496-498.
Identification of defect sites in FeAl by Doppler spectroscopy of core electrons
W. Egger, G. Bischof, V. Gröger and G. Krexner; Materials Science Forum 363-365 (2001) 82-84.
Annealing effects in hydrogenated amorphous silicon layers
A. Hempel, A. Dabrowski, M. Härting, M. Hempel, D. Knoesen, W. Bauer-Kugelmann, G. Kögel, W. Triftshäuser and D. Britton; Materials Science Forum 363-365 (2001) 463-465.
Defect studies of diamond hard coatings
A. Hempel, M. Hempel, M. Härting, D. Britton, W. Bauer-Kugelmann and W. Triftshäuser; Radiation Effects and Defects in Solids 156 (1) (2001) 215-220.
Intense positron source at the Munich research reactor FRM-II
C. Hugenschmidt, G. Kögel, K. Schreckenbach, P. Sperr, B. Straßer and W. Triftshäuser; Materials Science Forum 363-365 (2001) 425-429.
Annealing behavior of vacancies and Z1/2 levels in electron-irradiated 4H-SiC studied by positron annihilation and deep-level transient spectroscopy
A. Kawasuso, F. Redmann, R. Krause-Rehberg, M. Weidner, T. Frank, G. Pensl, P. Sperr, W. Triftshäuser and H. Itoh; Applied Physics Letters 79 (24) (2001) 3950-3952.
Vacancies and deep levels in electron-irradiated 6H SiC epilayers studied by positron annihilation and deep level transient spectroscopy
A. Kawasuso, F. Redmann, R. Krause-Rehberg, T. Frank, M. Weidner, G. Pensl, P. Sperr and H. Itoh; Journal of Applied Physics 90 (7) (2001) 3377-3382.
Annealing Process of Defects in Epitaxial SiC Induced by He and Electron Irradiation: Positron Annihilation Study
A. Kawasuso, F. Redmann, R. Krause-Rehberg, P. Sperr, T. Frank, M. Weidner, G. Pensl and H. Itoh; Materials Science Forum 353-356 (2001) 537-540.
Vacancies in He-implanted 4H and 6H SiC epilayers studied by positron annihilation
A. Kawasuso, M. Weidner, F. Redmann, T. Frank, P. Sperr, R. Krause-Rehberg, W. Triftshäuser and G. Pensl; Physica B: Condensed Matter 308-310 (2001) 660-663.
Positron microscopy
G. Kögel; Materials Science Forum 363-365 (2001) 409-414.
Identification of getter defects in high-energy self-implanted silicon at Rp/2
R. Krause-Rehberg, F. Börner, F. Redmann, J. Gebauer, R. Kögler, R. Kliemann, W. Skorupa, W. Egger, G. Kögel and W. Triftshäuser; Physica B: Condensed Matter 308-310 (2001) 442-445.
Investigation of reactor steels
V. Slugen, J. Hascik, R. Gröne, P. Bartik, A. Zeman, G. Kögel, P. Sperr and W. Triftshäuser; Materials Science Forum 363-365 (2001) 47-51.
Pulsed positron beam in investigation of reactor steels
V. Slugeň, G. Kögel, P. Sperr and W. Triftshäuser; Journal of Electrical Engineering 52 (03-04) (2001) 88-91.
'Smart cut' silicon by proton implantation: Lifetime studies with a pulsed positron beam
P. Sperr, G. Kögel, W. Bauer-Kugelmann, W. Triftshäuser and M. Fujinami; Materials Science Forum 363-365 (2001) 532-536.

2000

Structural characterization of hydrogenated a-Si using slow positron beam techniques
D. Britton, A. Hempel, D. Knoesen, W. Bauer-Kugelmann and W. Triftshäuser; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 164 (2000) 1010-1015.
Defect identification in GaAs grown at low temperatures by positron annihilation
J. Gebauer, F. Börner, R. Krause-Rehberg, T. Staab, W. Bauer-Kugelmann, G. Kögel, W. Triftshäuser, P. Specht, R. Lutz, E. Weber and M. Luysberg; Journal of Applied Physics 87 (12) (2000) 8368-8379.
Positron annihilation in near-surface regions and layered structures
W. Triftshäuser; Vacuum 58 (1) (2000) 33-44.

1999

High intense positron beam at the new Munich research reactor FRM-II
C. Hugenschmidt, G. Kögel, K. Schreckenbach, P. Sperr, M. Springer, B. Straßer and W. Triftshäuser; Applied Surface Science 149 (1) (1999) 7-10.
Characterization of RF-sputtered platinum films from industrial production plants using slow positrons
A. Osipowicz, M. Härting, M. Hempel, D. Britton, W. Bauer-Kugelmann and W. Triftshäuser; Applied Surface Science 149 (1) (1999) 198-203.
A variable nanosecond delay for fast signals
P. Sperr and M. Maier; Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 431 (1) (1999) 234-235.

1998

Thermodynamics of liquid mixtures consisting of a very polar and a non-polar aromatic: (Benzonitrile + benzene, or toluene)
E. Wilhelm, W. Egger, M. Vencour, A. Roux, M. Polednicek and J.-P. Grolier; Journal of Chemical Thermodynamics 30 (12) (1998) 1509-1532.
Low energy positron lifetime studies on open-volume defects of epitaxial high temperature superconductor thin film YBa2Cu3O 7-x
X. Zhou and W. Triftshäuser; He Jishu/Nuclear Techniques 21 (2) (1998) .
Temperature dependence of positron lifetime in a laser-ablated YBa_2Cu_3O_7 - X film
X.Y. Zhou, B.Y. Li, G. Kögel and W. Triftshäuser; Chinese Journal of Low Temperature Physics 20 (5) (1998) 348-355.

1997

Diffusivity and surface transition rate of positrons in crystalline silicon as a function of dopant concentration
W. Bauer-Kugelmann, J. Duffy, J. Störmer, G. Kögel and W. Triftshäuser; Applied Surface Science 116 (1997) 231-235.
Positron lifetimes and positron moderation of 4H-SiC subjected to various treatments
W. Bauer-Kugelmann, G. Kögel, P. Sperr and W. Triftshäuser; Materials Science Forum 255-257 (1997) 662-664.
Progress report from the Munich Scanning Positron Microscope
A. David, G. Kögel, P. Sperr and W. Triftshäuser; Materials Science Forum 255-257 (1997) 741-743.
Investigation of band bending in silicon by slow positron lifetime measurements
J. Duffy, W. Bauer-Kugelmann, G. Kögel and W. Triftshäuser; Applied Surface Science 116 (1997) 241-246.
Vacancy defects in low-temperature-grown GaAs observed by continuous and pulsed slow positrons
J. Gebauer, R. Krause-Rehberg, S. Eichler, W. Bauer-Kugelmann, G. Kögel, W. Trifthäuser, M. Luysberg, H. Sohn and E. Weber; Materials Science Forum 255-257 (1997) 204-208.
Preparation of intense positron sources for beam applications
A. Kauffmann, P. Sperr, G. Kögel and W. Triftshäuser; Materials Science Forum 255-257 (1997) 680-682.
Positron diffusion in solids and the reconstruction of inhomogeneous defect distributions from lifetime measurements
G. Kögel; Applied Physics A: Materials Science and Processing 63 (3) (1997) 227-235.
The München scanning positron microscope
G. Kögel, W. Triftshäuser, P. Sperr, K. Uhlmann, D. Britton, P. Willutzki, R. Steindl, W. Junker, A. Zecca, R. Brusa, M. Duarte-Naia, G. Karwasz, J. Paridaens and A. Piazza; Applied Surface Science 116 (1997) 108-113.
Recent investigations on the reconstruction of defect profiles from data obtained by pulsed positron beams
G. Kögel; Materials Science Forum 255-257 (1997) 243-247.
Defect spectroscopy in diamond, a new model for positron trapping in insulators
M. Shi, W. Waeber and W. Triftshäuser; Applied Surface Science 116 (1997) 203-210.
Pulsing of low energy positron beams
P. Sperr, G. Kögel, P. Willutzki and W. Triftshäuser; Applied Surface Science 116 (1997) 78-81.
Present performance limits of pulsed positron beams
P. Sperr and G. Kögel; Materials Science Forum 255-257 (1997) 109-113.
Intense positron source at the Munich research reactor
M. Springer, G. Kögel, B. Straßer, W. Triftshäuser and K. Schreckenbach; Materials Science Forum 255-257 (1997) 695-697.
A high intense reactor based positron source
G. Triftshäuser, G. Kögel, W. Triftshäuser, M. Springer, B. Straßer and K. Schreckenbach; Applied Surface Science 116 (1997) 45-48.
A scanning positron microscope for defect analysis in materials science
W. Triftshäuser, G. Kögel, P. Sperr, D. Britton, K. Uhlmann and P. Willutzki; Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 130 (1-4) (1997) 264-269.
The relationship between open volume defects and deposition conditions of superconducting thin-film YBa2Cu3O7-x
X. Zhou, X. Lu, H. Jiang, W. Bauer-Kugelmann, J. Duffy, G. Kögel and W. Triftshäuser; Journal of Physics: Condensed Matter 9 (6) (1997) L61-L66.
Positron trapping in a co-evaporation epitaxial superconducting thin film YBa2Cu3O7-x
X. Zhou, W. Bauer-Kugelmann, J. Störmer, G. Kögel and W. Triftshäuser; Physics Letters, Section A: General, Atomic and Solid State Physics 225 (1-3) (1997) 143-148.

1996

Positron diffusion in solids and the reconstruction of inhomogeneous defect distributions from lifetime measurements
G. Kögel; Applied Physics A 63 (3) (1996) 227-235.
Vacancy-type defects in molecular beam epitaxy low temperature grown GaAs, a positron beam lifetime study
J. Störmer, W. Triftshäuser, N. Hozhabri and K. Alavi; Applied Physics Letters 69 (13) (1996) 1867-1869.
Silicon carbide: A new positron moderator
J. Störmer, A. Goodyear, W. Anwand, G. Brauer, P. Coleman and W. Triftshäuser; Journal of Physics Condensed Matter 8 (7) (1996) L89-L94.
Positron annihilation in the epitaxial superconducting thin-film GdBa2Cu3O7-δ studied by using a pulsed positron beam
X. Zhou, J. Störmer, R. Wang, J. Keimel, H. Li, G. Kögel and W. Triftshäuser; Physical Review B - Condensed Matter and Materials Physics 54 (2) (1996) 1398-1403.

1995

Positron studies of polycrystalline TiC
G. Brauer, W. Anwand, E. Nicht, P. Coleman, A. Knights, H. Schut, G. Kögel and N. Wagner; Journal of Physics: Condensed Matter 7 (47) (1995) 9091-9099.
Magnetic positron optics
D. Britton, K. Uhlmann and G. Kögel; Applied Surface Science 85 (C) (1995) 158-164.
Defect Profiling with Pulsed e+-Beams
G. Kögel; Materials Science Forum 175-178 (1995) 107-114.
A slow positron lifetime study of the annealing behaviour of an amorphous silicon layer grown by MBE
J. Störmer, P. Willutzki, D. Britton, G. Kögel, W. Triftshäuser, W. Kiunke, F. Wittmann and I. Eisele; Applied Physics A Materials Science & Processing 61 (1) (1995) 71-74.
A High Intense Positron Source at the Munich Research Reactor
G. Triftshäuser, G. Kögel, W. Triftshäuser, M. Springer, T. Hagner and K. Schreckenbach; Materials Science Forum 175-178 (1995) 221-224.
A concept of a scanning positron microscope
K. Uhlmann, W. Triftshäuser, G. Kögel, P. Sperr, D. Britton, A. Zecca, R. Brusa and G. Karwasz; Fresenius' Journal of Analytical Chemistry 353 (5-8) (1995) 594-597.
A new optical column for a scanning positron microscope
K. Uhlmann, D. Britton and G. Kögel; Measurement Science and Technology 6 (7) (1995) 932-938.
Investigations of positron lifetimes in InP with a pulsed positron beam
P. Willutzki, J. Störmer, D. Britton and W. Triftshäuser; Applied Physics A Materials Science & Processing 61 (3) (1995) 321-324.
An Upgraded Version of a Pulsed Positron Beam
P. Willutzki, J. Störmer, G. Kögel, P. Sperr, D. Britton, R. Steindl and W. Triftshäuser; Materials Science Forum 175-178 (1995) 237-240.
A Pulsed Positron Microbeam
A. Zecca, R.S. Brusa, M.P. Duarte-Naia, G.P. Karwasz, J. Paridaens, A. Piazza, G. Kögel, P. Sperr, D.T. Britton, K. Uhlmann, P. Willutzki and W. Triftshäuser; Europhysics Letters (EPL) 29 (8) (1995) 617-622.

1994

On the sensitivity of positrons to electric fields and defects in MBE-grown silicon structures
D. Britton, P. Willutzki, W. Triftshäuser, E. Hammerl, W. Hansch and I. Eisele; Applied Physics A Solids and Surfaces 58 (4) (1994) 389-393.
On the electronic design and the performance of a ramp generator for a pulsed low energy positron beam
P. Sperr, P. Willutzki and M. Maier; Materials Science Forum 175-178 (pt 2) (1994) 993-996.
Intense sources for positron research
W. Triftshäuser; Acta Physica Hungarica 75 (1-4) (1994) 61-69.
Through the lens reflection remoderator for positrons
K. Uhlmann, D. Britton and G. Kögel; Optik (Jena) 98 (1) (1994) 5-10.
An improved pulsed low-energy positron system
P. Willutzki, J. Störmer, G. Kögel, P. Sperr, D. Britton, R. Steindl and W. Triftshäuser; Measurement Science and Technology 5 (5) (1994) 548-554.
Upgraded version of a pulsed positron beam
P. Willutzki, J. Störmer, G. Kögel, P. Sperr, D. Britton, R. Steindl and W. Triftshäuser; Materials Science Forum 175-178 (pt 1) (1994) 237-240.
Retarding field and timing measurements of positrons from a W[100] foil
P. Willutzki, J. Störmer, D.T. Britton, G. Kögel, P. Sperr, R. Steindl and W. Triftshäuser; AIP Conference Proceedings 303 (1) (1994) 542-549.

1993

Investigation of defect structures in deformed and helium-irradiated refractory metals by positron annihilation
G. Kögel, P. Sperr, J. Störmer and W. Triftshäuser; Journal of Physics: Condensed Matter 5 (23) (1993) 3987-4006.
A study of the Fermi surfaces of lithium and disordered lithium-magnesium alloys: Theory and experiment
S. Rajput, R. Prasad, R. Singru, W. Triftshäuser, A. Eckert, G. Kögel, S. Kaprzyk and A. Bansil; Journal of Physics: Condensed Matter 5 (35) (1993) 6419-6432.
Positron annihilation with vacancies in thin surface layer of As heavily doped Si
L. Zhi-Heng, D.-C. Wang and G. Kögel; Acta Physica Sinica (Overseas Edn) 2 (8) (1993) 577-582.

1992

Positron Annihilation at Clean Metallic Surfaces
G. Kögel; Materials Science Forum 105-110 (1992) 341-348.
Study of Defects Produced by Laser Surface Melting Using Positron Annihilation
C. Lopes Gil, M. Ferreira Marques, A.P.d. Lima, R. Vilar, A. de Deus and W. Kögel G.and Triftshäuser; Materials Science Forum 105-110 (1992) 1141-1144.
Positron Lifetimes on Clean Metallic Surfaces
R. Steindl, G. Kögel, P. Sperr, P. Willutzki, D. Britton and W. Triftshäuser; Materials Science Forum 105-110 (1992) 1455-1458.
The Electron Momentum Distribution of LiMg Alloys by Positron-Annihilation 2D-ACAR
W. Triftshäuser, A. Eckert, G. Kögel and P. Sperr; Materials Science Forum 105-110 (1992) 501-510.
A New Concept for a Pulsed Positron Source
P. Willutzki, P. Sperr, D. Britton, G. Kögel, R. Steindl and W. Triftshäuser; Materials Science Forum 105-110 (1992) 2009-2012.

1990

Investigation of defect structures in deuteron irradiated and deformed stainless steel 316 by positron annihilation
C. Lopes Gil, A.P. De Lima, N.A.D. Campos, P. Sperr, G. Kögel and W. Triftshäuser; Radiation Effects and Defects in Solids 112 (4) (1990) 111-118.
The pulsed positron beam in Munich and a high intense positron source at Grenoble
W. Triftshäuser, G. Kögel, K. Schreckenbach and B. Krusche; Helvetica Physica Acta 63 (4) (1990) 378-384.

1989

Neutron-irradiated reactor pressure vessel steels investigated by positron annihilation
C. Lopes Gil, A. De Lima, N. De Campos, J. Fernandes, G. Kögel, P. Sperr, W. Triftshäuser and D. Pachur; Journal of Nuclear Materials 161 (1) (1989) 1-12.
On the investigation of amorphous hydrogenated carbon by positron annihilation
G. Kögel, D. Schödlbauer, W. Triftshäuser and J. Winter; Journal of Nuclear Materials 162-164 (C) (1989) 876-880.
Lifetime spectroscopy in sub-surface defect studies
G. Kögel; In: , L. Dorikens-Vanpraet, M. Dorikens and D. Segers (Eds.), Proceedings of the 8th International Conference on Positron Annihilation, ICPA-8 (1989) 52-55 .
Study of nitrogen implantation layer and fatigued surface layer in titanium by pulsed monoenergetic positron beams
J.D. McGervey, G. Welsch, G. Kögel and D. Schödlbauer; In: , L. Dorikens-Vanpraet, M. Dorikens and D. Segers (Eds.), Proceedings of the 8th International Conference on Positron Annihilation, ICPA-8 (1989) 425-427 .
Helium precipitation and radiation damage in refractory metals
P. Sperr, G. Kögel, J. Störmer, W. Triftshäuser and R. Lasser; In: , L. Dorikens-Vanpraet, M. Dorikens and D. Segers (Eds.), Proceedings of the 8th International Conference on Positron Annihilation, ICPA-8 (1989) 437-439 .

1988

Positron Annihilation Studies in Neutron Irradiated Steels
C. Lopes Gil, A. de Lima, N. de Campos, J. Fernandes, G. Kögel, P. Sperr and W. Triftshäuser; In: E. Recknagel and J. Soares (Eds.), Nuclear Physics Applications on Materials Science , Vol. 144 , p. 441-442 , Springer Netherlands , 1988.
Investigation of micropores in amorphous hydrogenated carbon by a pulsed positron beam
G. Kögel, D. Schödlbauer, W. Triftshäuser and J. Winter; Physical Review Letters 60 (15) (1988) 1550-1553.
A pulsing system for low energy positrons
D. Schödlbauer, P. Sperr, G. Kögel and W. Triftshäuser; Nuclear Inst. and Methods in Physics Research, B 34 (2) (1988) 258-268.

1987

Lifetime Measurements with a Pulsed Slow Positron Beam
D. Schödlbauer, G. Kögel, P. Sperr and W. Triftshäuser; physica status solidi (a) 102 (2) (1987) 549-554.
Timing measurements with barium flouride scintillators
P. Sperr; Nuclear Inst. and Methods in Physics Research, A 254 (3) (1987) 635-636.
Defects in amorphous alloys
W. Triftshäuser and G. Kögel; In: E. Lüscher, G. Fritsch and G. Jacucci (Eds.), Amorphous and Liquid Materials , Vol. 118 , p. 218-232 , Springer Netherlands , 1987.

1986

Positron Annihilation
W. Triftshäuser; In: U. Gonser (Ed.), Microscopic Methods in Metals , Vol. 40 , Chapter 9 , p. 249-295 , Springer Berlin Heidelberg , 1986.

1985

Helium irradiated nickel investigated by positron annihilation
G. Kögel, F. Qin-Min, P. Sperr, W. Triftshäuser and B. Viswanathan; Journal of Nuclear Materials 127 (2-3) (1985) 125-131.
Positron lifetime and Doppler-broadening studies of vacancy formation and phase transformation in uranium
G. Kögel, P. Sperr, W. Triftshäuser and S. Rothman; Journal of Nuclear Materials 131 (2-3) (1985) 148-157.
The reconstruction of defect distributions close to the surface from data obtained by slow positrons
G. Kögel; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 965-967 .
Positron Annihilation Studies of Neutron Irradiated Reactor Steels
C. Lopes Gil, P. Sperr, G. Kögel and W. Triftshäuser; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 479-481 .
Study of Defects in Stainless Steel 316 by Positron Annihilation
C. Lopes Gil, P. Sperr, G. Kögel and W. Triftshäuser; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 877-879 .
A Pulsed Positron Beam for Lifetime Studies
D. Schödlbauer, P. Sperr, G. Kögel and W. Triftshäuser; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 957-959 .
Positron Lifetime and Doppler-Broadening studies of vacancy formation and phase transformation in uranium
P. Sperr, G. Kögel and W. Triftshäuser; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 509-511 .
A Positron Annihilation Study of Ageing in Aluminum Alloy
W. Triftshäuser and G. Kögel; In: Proceedings of the 7th International Conference on Positron Annihilation, ICPA-7 (1985) 874-876 .

1983

Helium implantation in metals investigated by monoenergetic positrons
G. Kögel and W. Triftshäuser; Radiation Effects 78 (1-4) (1983) 221-230.
Investigation of helium and deuteron irradiated stainless steel (and nickel) by positron annihilation
B. Viswanathan, W. Triftshäuser and G. Kögel; Radiation Effects 78 (1-4) (1983) 231–243.

1982

Helium implantation in metals investigated by monoenergetic positrons
W. Triftshäuser, G. Kögel and J. Bohdansky; Journal of Nuclear Materials 111-112 (C) (1982) 687-694.
Defect structures below the surface in metals investigated by monoenergetic positrons
W. Triftshäuser and G. Kögel; Physical Review Letters 48 (25) (1982) 1741-1744.
Defect structures close to the surface in metals investigated by slow positrons
W. Triftshäuser and G. Kögel; In: Point Defects and Defect Interactions in Metals, Yamada Conference Proceedings (1982) 15-18 .
Investigation of helium irradiated stainless steel by positron annihilation.
B. Viswanathan, G. Kögel, P. Sperr and W. Triftshäuser; In: , P.G. Coleman, S.C. Sharma and L.M. Diana (Eds.), 6. International conference on positron annihilation; Arlington, TX (USA); 3 - 7 Apr 1982 , Positron Annihilation (1982) 520-522 , North-Holland; Amsterdam (Netherlands).

1980

Investigation of vacancy formation and phase transformations in uranium by positron annihilation
H. Matter, J. Winter and W. Triftshäuser; Journal of Nuclear Materials 88 (2-3) (1980) 273-278.

1979

Phase transformations and vacancy formation energies of transition metals by positron annihilation
H. Matter, J. Winter and W. Triftshäuser; Applied Physics 20 (2) (1979) 135-140.

1978

μ+SR diffusion studies at LAMPF
R. Heffner, W. Gauster, D. Parkin, C. Huang, R. Hutson, M. Leon, M. Schillaci, M. Simmons and W. Triftshäuser; Hyperfine Interactions 4 (1-2) (1978) 838-843.
Interaction of hydrogen and vacancies in copper investigated by positron annihilation
B. Lengeler, S. Mantl and W. Triftshäuser; Journal of Physics F: Metal Physics 8 (8) (1978) 1691-1698.
Defect specific temperature dependence of positron trapping
S. Mantl, W. Kesternich and W. Triftshäuser; Journal of Nuclear Materials 69-70 (C) (1978) 593-595.
Defect annealing studies on metals by positron annihilation and electrical resitivity measurements
S. Mantl and W. Triftshäuser; Physical Review B 17 (4) (1978) 1645-1652.

1977

Measurement of the depolarization rate of positive muons in copper and aluminum
W. Gauster, R. Heffner, C. Huang, R. Hutson, M. Leon, D. Parkin, M. Schillaci, W. Triftshäuser and W. Wampler; Solid State Communications 24 (9) (1977) 619-622.
Annealing studies of voids in neutron-irradiated aluminium single crystals by positron annihilation
V.W. Lindberg, J.D. McGervey, R.W. Hendricks and W. Triftshäuser; Philosophical Magazine 36 (1) (1977) 117-128.