Positron Annihilation Group, Charles University in Prague

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New:

PLRF 19 code for fitting of positron lifetime - binaries are available for download.

Talks & posters

Our contributions at The 18th International Conference on Positron Annihilation (ICPA-18) , 19.8. - 24.8. 2018, Orlando (USA):

• lecture at the Positron school : J. Čížek: Defects in solids
• plenary talk : J. Čížek, P. Hruška, J. Valenta, O, Melikhova, J. Kuriplach, M. Elsayed, R. Krause-Rehberg, W. Anwand, M.O. Liedke, F. Selim: Point defects in ZnO single crystals and their thermal stability
• talk : P. Hruška, J. Čížek, O. Melikhova, F. Lukáč, C. Correa, M.O. Liedke, W. Anwand, L. Fekete, J. Bulíř: Study of structure and defects in Pd films and Pd-Mg multi-layers loaded with hydrogen
• talk : F. Lukáč, J. Čížek, J. Kuriplach, M. Dudr, R. Mušálek, M. Vilémová, J. Zýky, J. Málek: Defects in high entropy alloy HfNbTaTiZr
• talk : I. Procházka, J. Čížek, O. Melikhova, F. Lukáč, P. Hruška, W. Anwand, M.O. Liedke, G. Brauer, T.E. Konstantinova, I.A. Danilenko: Defects and porosity in zirconia-based nanomaterials
• poster : O. Melikhova, J., Čížek, P., Hruška, T. Vlasaák, P. Fitl, M. Novotný: Investigation of free volumes in phthalocyanines and perylene

Our contributions at The International Workshop on Positron Studies of Defects 2017 (PSD-17) 3.9. - 8.9. 2017, Dresden-Rossendorf, Germany:

• invited talk : J. Čížek, M. Vlach, O, Melikhova, M. Vlček, I. Procházka, B. Smola, I. Stulíková, M. Liu, J. Banhart: Natural ageing and early precipitation stages in Al-Mg-Si alloys studied by positron annihilation spectroscopy


• talk : P. Hruška, J. Čížek, J. Bulíř, F. Lukáč, W. Anwand, M.O. Liedke, L. Fekete, O. Melikhova, J. Lančok: Slow positron annihilation studies of Pd-Mg multilayers


• poster : O. Melikhova, J. Čížek, P. Hruška, F. Lukáč, J. Knapp, L. Havela, S. Mašková, W. Anwand, M.O. Liedke: Hydrogen-induced defects in Ti and their thermal stability

Our contributions at the 12th International Workshop on Positron and Positronium Chemistry (PPC12) 28.8. - 1.9. 2017, Lublin, Poland:

• invited talk : J. Čížek, O. Melikhova, P. Hruška, M. Vlček, W. Anwand, M.O. Liedke, M. Novotný, J. Bulíř: Positronium formation in nanostructured metals


• talk : P. Hruška, J. Čížek, J. Bulíř, F. Lukáč, W. Anwand, M.O. Liedke, L. Fekete, O. Melikhova, J. Lančok: Hydrogen interaction with vacancies in Ti


• poster : O. Melikhova, J. Čížek, L. Košinová, P. Hruška: Thermal development of free volumes in Nafion membrane

Our contributions at The 14th International Workshop on Slow Positron Beam Techniques & Applications (SLOPOS14), Matsue (Japan), 22.5.-27.5., 2016:

• invited talk : J. Čížek, M. Vlček, P. Hruška, F. Lukáč, I. Melikhova, J. Valenta, W. Anwand, F. Selim, Ch. Hugenschmidt, W. Egger: Characterization of point defects in ZnO crystals


• poster : O. Melikhova, J. Čížek, P. Hruška, M. Vlček, I. Procházka, W. Anwand, M. Novotný, J. Bulíř: Defect studies of nanostructured black Au films

Our contributions at The 17th International Conference on Positron Annihilation (ICPA-17), Wuhan (China), 20.9.-25.9., 2015:

• invited talk : J. Čížek, M. Janeček, T. Krajňák, J. Stráská, P. Hruška, J. Gubicza, H.S. Kim: Characterization of defects in ultrafine-grained interstitial-free steel prepared by severe plastic deformation


• invited talk : J. Kuriplach, B. Barbiellini: Parameter-Free Gradient Correction for Positron States in Oxides


• talk : P. Hruška, J. Čížek, J. Knapp, S. Mašková, O. Melikhova, I. Procházka: Hydrogen-induced defects in titanium


• talk : I. Procházka, J. Čížek, O. Melikhova, P. Hruška, W. Anwand, T.E. Konstantinova, I.A. Danilenko: Characterization of nano-porosity in zirconia-based materials


• poster : O. Melikhova, J. Čížek, I. Procházka, P. Hruška, J. Valenta, W. Anwand, V. Havránek, V. Skuratov, T. Strukova T.E. Konstantinova, I.A. Danilenko: Study of defects in high energy ion implanted ZnO crystals

Our contributions at The International Workshop on Positron Studies of Defects 2014 (PSD-14), Kyoto (Japan), 14.9.-19.9., 2014:

• invited talk : J. Čížek, O. Melikhova, I. Procházka, M. Janeček, P. Hruška, R.K. Islamgaliev, S.V. Dobatkin: Spatial distribution of defects in ultra fine grained metals prepared by high pressure torsion


• talk : I. Procházka, J. Čížek, F. Lukáč, O. Melikhova, J. Valenta, V. Havránek, W. Anwand, V.A. Skuratov, T.S. Strukova: Characterisation of Irradiation-Induced Defects in ZnO Single Crystals


• talk : F. Lukáč, J. Čížek, J. Knapp, I. Procházka, P. Zhanal, R.K. Islamgaliev: Ultra Fine Grained Ti Prepared by Severe Plastic Deformation


• talk : M. Vlček, J. Čížek, F. Lukáč, O. Melikhova, I. Procházka, M. Vlach, I. Stulíková, B. Smola, A. Jäger: Precipitation Effects in Mg-Zn-Y Alloys Strengthened by Quasicrystalline Phase


• poster : O. Melikhova, J. Čížek, I. Procházka, P. Hruška, V.A. Skuratov, T.E. Konstantinova, I.A. Danilenko: Defect studies of zirconia implanted by high energy Xe ions


• poster : M. Vlček, J. Čížek, O. Melikhova, P. Hruška, I. Procházka, M. Vlach, I. Stulíková, B. Smola: Early stages of precipitation in Mg-RE alloys studied by positron annihilation spectroscopy

Our contributions at the conference 13th International Workshop on Slow Positron Beam Techniques and Applications (SLOPOS-13), Munich (Germany), 15.9.-20.9., 2013:

• invited talk : J. Kuriplach, B. Barbiellini: Gradient correction scheme for bulk and defect positron states in materials: New developments


• talk : J. Čížek, M. Vlček, F. Lukáč, O. Melikhova, I. Procházka, W. Anwand, A. Wagner, M. Butterling, R. Krause-Rehberg: Positron annihilation in flight: experiment with slow and fast positrons


• talk : I. Procházka, J. Čížek, O. Melikhova, W. Anwand, T.E. Konstantinova, I.A. Danilenko: Sintering of zirconia-based nanomaterials studied by variable energy slow-positron beam


• poster : O. Melikhova, J. Čížek, M. Vlček, F. Lukáč, I. Procházka, W. Anwand, G. Brauer: Structural studies of thin Pd films loaded with hydrogen


• poster : F. Lukáč, J. Čížek, I. Procházka, Y. Jirásková, D. Janičkovič, J. Š. Veterníková, W. Anwand, G. Brauer: Investigation of H+ implanted Fe-Al alloys


• poster : M. Vlček, J. Čížek, M. Novotný, J. Bulíř, J. Lančok, W. Anwand, G. Brauer, J.-P. Mosnier: Defect studies of thin ZnO films prepared by pulsed laser deposition


• poster : P. Hruška, J. Čížek, O. Melikhova, I. Procházka, J. Bulíř, J. Lančok, M. Novotný, W. Anwand: Structural studies of thin Mg films

Our contributions at the 16th International Conference on Positron Annihilation (ICPA-16), Bristol (UK), August 20-24, 2012:

• invited talk : J. Čížek, O. Melikhova, Z. Barnovská, I. Procházka, R.K. Islmgaliev, S.V. Dobatkin: Vacancy clusters in ultra fine grained metals prepared by severe plastic deformation


• talk : F. Lukáč, J. Čížek, I. Procházka, Y. Jirásková, D. Janičkovič, W. Anwand, G. Brauer: Vacancy-induced hardening in Fe-Al alloys


• talk : I. Procházka, J. Čížek, O. Melikhova, T.E. Konstantinova, I. A. Danilenko, I. A. Yashchishyn, W. Anwand, G. Brauer: Positron annihilation studies of zirconia doped with metal cations of different valence


• talk : J. Kuriplach: Interstitial space in materials and its relation to positron distribution: A geometrical point of view


• poster : O. Melikhova, J. Čížek, I. Procházka, R. Kužel, M. Novotný, J. Bulíř, J. Lančok, W. Anwand, G. Brauer, J. Connolly, E. McCarthy, S. Krishnamurthy, J.-P. Mosnier: Defect studies of ZnO films prepared by pulsed laser deposition on various substrates


• poster : M. Vlček, J. Čížek, I. Procházka: Software for analysis of waveforms acquired by digital Doppler broadening spectrometer

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