J. Kansy 1 and M. Ziąbka 2 1 Institute of Material Science, Silesian University, Bankowa 12, 40- 008 Katowice, Poland 2 Faculty of Materials Science and.

Slides:

Advertisements

Similar presentations

guest molecule dynamics and free volume

Advertisements

REACTIONS OF INTERSTITIAL CARBON WITH BACKGROUND IMPURITIES IN N- AND P-TYPE SILICON STRUCTURES L.F. Makarenko*, L.I. Murin**, M. Moll***, F.P. Korshunov**,

Molecular Dynamics Simulations of Radiation Damage in Amorphous Silica: Effects of Hyperthermal Atomic Oxygen Vanessa Oklejas Space Materials Laboratory.

Bożena Zgardzińska Department of Nuclear Methods Institute of Physics, Maria Curie-Sklodowska University, Lublin.

Lodz University of Technology, Poland

Characterization of primed state of CVD diamond by light and alpha particles C. Manfredotti Experimental Physics Department University of Torino INFN-

Leonid I. Murin 1,2 and Bengt G. Svensson 2 1 Joint Institute of Solid State and Semiconductor Physics, Minsk, Belarus 2 Oslo University, Centre for Materials.

NEEP 541 – Defects Fall 2003 Jake Blanchard. Outline Irradiation Induced Defects Definitions Particles Cascades Depleted zones Thermal Spikes.

Quenching of positronium in Al 2 O 3 supported catalysts Department of Physics, Wuhan University, Wuhan , P. R. China Z. Q. Chen, H. J. Zhang and.

EMISSION SPECTROSCOPIC STUDIES OF LASER-INDUCED GRAPHITE PLASMAS László Nemes Research Laboratory for Materials and Environmental Chemistry, Chemical Research.

Increasing life span of polymer solar cell. Nagilthes Muthu Chem 4101 Fall 2011.

POSITRON ANNIIHILATION LIFETIME SPECTROSCOPY Fundamentals and applications Bożena Jasińska Institute of Physics Maria Curie Sklodowska University II SYMPOSIUM.

Investigation of Ionic Liquids by Positron Annihilation Lifetime Spectroscopy G. Dlubek 1†, Yang. Yu 2, R. Krause-Rehberg 2, W. Beichel 3 and I. Krossing.

J.Vaitkus et al., WOEDAN Workshop, Vilnius, The steady and transient photoconductivity, and related phenomena in the neutron irradiated Si.

24 th ICNTS, Bologna, 1-5 September 2008 Radiation Induced Damage Electron, Gamma Photon and Ion Irradiation Effects in PP/EPR/HDPE Christelle Bergeon.

© J D White SMS : Illuminating the photo-physics of Luminescent Conjugated Polymers– Results 1 Results & Discussion Results: observing the PL time trace’s:

Ultrafast Spectroscopy Of Methyl Viologen: Effects Of Zeolite Entrapment Joseph Henrich, Haoyu Zhang, Jeremy White, Prabir Dutta and Bern Kohler The Ohio.

X-ray radiation damage of silicon strip detectors AGH University of Science and Technology Faculty of Physics and Applied Computer Science, Kraków, Poland.

Personal Radiation Dose IONIZING AND NON-IONIZING RADIATION Non-ionizing: Carries LESS energy Can only excite the water molecule. Ionizing: Carries MORE.

NAME AND DESCRIBE THE SUBATOMIC PARTICLES THAT MAKE UP AN ATOM.

Current Status of Diamond Sensors R&D in Minsk Group FCAL Collaboration Institute of Nuclear Physics PAN February 12-13, 2006, Krakow, Poland.

Superconducting FeSe studied by Mössbauer spectroscopy and magnetic measurements A. Błachowski 1, K. Ruebenbauer 1, J. Żukrowski 2, J. Przewoźnik 2, K.

Study of leakage current and effective dopant concentration in irradiated epi-Si detectors I. Dolenc, V. Cindro, G. Kramberger, I. Mandić, M. Mikuž Jožef.

Fluence–dependent lifetime variations in neutron irradiated MCZ Si measured by microwave probed photoconductivity and dynamic grating techniques E.Gaubas,

Photo-induced ferromagnetism in bulk-Cd 0.95 Mn 0.05 Te via exciton Y. Hashimoto, H. Mino, T. Yamamuro, D. Kanbara, A T. Matsusue, B S. Takeyama Graduate.

M. Kopcewicz and T. Kulik a ) Institute of Electronic Materials Technology, Warszawa, Wólczyńska Street 133, Poland, a ) Faculty of Materials Science.

1Department of Chemistry, University of Missouri-Kansas City

Highly efficient acceleration and collimation of high-density plasma Jan Badziak Institute of Plasma Physics and Laser Microfusion Warsaw, Poland.

Protein oligomerization in homogenous protein solutions Crosslinker:GlutaraldehydeOHC-CH 2 -CH 2 -CH 2 -CHO Y. Wang and O. Annunziata Langmuir, 24,

Positron and Positronium Chemistry PPC10, September, Smolenice Castle, Slovakia Thermal annealing influence on ions implanted Fe-Cr model alloys.

High Dose Irradiation of Possible FCAL Sensors at the S-DALINAC Ch.Grah Physics and Detector Meeting DESY HH,

Determination of the 3  fraction in positron annihilation Bożena Jasińska Institute of Physics, Maria Curie Sklodowska University Lublin, Poland.

Positron lifetimes and mechanical properties of gamma-irradiated ultra high molecular weight polyethylene Y. Kobayashi, M. Yamawaki, T. Oka, S Saiki, H.

Ultrafast carrier dynamics Optical Pump - THz Probe Ultrafast carrier dynamics in Br + -bombarded semiconductors investigated by Optical Pump - THz Probe.

Anomalous Effects in Thermoluminescence Arkadiusz Mandowski Jacek Orzechowski Ewa Mandowska Institute of Physics Jan Długosz University Częstochowa, Poland.

Gas Permeability of Uniaxially Deformed Polyethylene and Polypropylene Films D. Klepac 1, K. Galić 2, S. Valić 1,3 1 School of Medicine, University of.

Gamma-induced positron lifetime and age-momentum

J. Phys. Chem. Lett., 2010, 1, Introduction Electron transfer (ET) processes and charge transfer (CT) states are involved in photosynthesis utilized.

STEF-NANO-ACC Stimulating, Encouraging and Facilitating the Participation of ACC Nanotechnology and Nanoscience Research Organisations To FP6 Topic:

Positron Annihilation Lifetime Spectroscopy (PALS)

Charge Collection and Trapping in Epitaxial Silicon Detectors after Neutron-Irradiation Thomas Pöhlsen, Julian Becker, Eckhart Fretwurst, Robert Klanner,

Structural Determination of Solid SiH 4 at High Pressure Russell J. Hemley (Carnegie Institution of Washington) DMR The hydrogen-rich solids are.

Lecture 7 Lattice Defects, Vacancies PHYS 430/603 material Laszlo Takacs UMBC Department of Physics.

T. Lari – INFN Milan Status of ATLAS Pixel Test beam simulation Status of the validation studies with test-beam data of the Geant4 simulation and Pixel.

Magnetism of the regular and excess iron in Fe1+xTe

Radiation Damage Studies for Si Diode Sensors Subject to MRaD Doses Bruce Schum UC Santa Cruz July

Radiation Damage Studies for Si Diode Sensors Subject to MRaD Doses Bruce Schum UC Santa Cruz June

1 Giuseppe G. Daquino 26 th January 2005 SoFTware Development for Experiments Group Physics Department, CERN Background radiation studies using Geant4.

Antihydrogen Workshop, June , CERN S.N.Gninenko Production of cold positronium S.N. Gninenko INR, Moscow.

Radiation Tests on optical fibres for the LHC machine T. Wijnands, D. Ricci CERN EN department Fraunhofer INT.

Proposed Laboratory Simulation of Galactic Positron In-Flight Annihilation in Atomic Hydrogen Benjamin Brown, Marquette University, Milwaukee, WI, USA.

Overview of low energy positron physics and applications

Presented by Ms. Kanokwan Boonsook Date: 8 June, 2016

Small internal electric fields in quaternary InAlGaN heterostructures S.P. Łepkowski 1, P. Lefebvre 2, S. Anceau 1,2, T. Suski 1, H. Teisseyre 1, H. Hirayama.

In situ and postradiation analysis of mechanical stress in alumina under swift heavy ion irradiation V.A.Skuratov 1, G.Bujnarowski 1,2, Yu.S.Kovalev 1,

Characterization of He implanted Eurofer97

Properties of Recent SIC Crystals

Effect of water and ethanol on the size distribution

Radiation Damage Studies for Solid State Sensors Subject to Mrad Doses

Radiation Damage Studies for Solid State Sensors Subject to MRaD Doses

Low Energy Positron Toroidal Accumulator

Radiation damage in Trombay nuclear waste glasses

Positron Lifetime Studies of Cu-Core/ Mn3O4-Shell Nanoparticles

Russian Research Center “ Kurchatov Institute”

atomic number atomic mass number of protons all of the above

··,--.,.,. ·.._. ·.., ' t... ' ' ;'I.1!; " ·( '·( ' ·), '+ "."

Science, 2010, 330, Room-Temperature Detection of a Single Molecule’s Absorption by Photothermal Contrast A. Gaiduk, M. Yorulmaz, P. V. Ruijgrok,

PS Unit 4 Standards PS Unit 4 Standards PS Unit 4 Standards

by Haiming Zhu, Kiyoshi Miyata, Yongping Fu, Jue Wang, Prakriti P

in the human tissue research

Presentation transcript:

J. Kansy 1 and M. Ziąbka 2 1 Institute of Material Science, Silesian University, Bankowa 12, Katowice, Poland 2 Faculty of Materials Science and Ceramic, University of Science and Technology, A. Mickiewicza 30, Krakow, Poland

 Positron irradiation effect at room temperature  Conventional descriptions of polymer PALS spectrum and their drawbacks  Delayed Formation of Positronium – the DFP model of spectrum  Results of fitting DFP to a series of HDPE lifetime spectra  Modified DFP model  Conclusions

 Positrons emitted from 22 Na induce irradiation damage in polymer - intensity of the longest- lived component I 3 decreases gradually with the measurement time.  Small dose of irradiation deposing (~ 1kGy e+ and 10 2 Gy  )– large effect on I 3 = I 3 (t) (t ~ 10 h)   3 not effected by positron source irradiation M. Welander and F.H.J. Maurer. Matter. Sci. Forum. 105/110, 1811 (1992) T. Suzuki at al. Radiat. Phys. Chem. 45, 657 (1995) Z.L. Peng at al. phys.stat.sol. (a) 155, 299 (1996)

T. Suzuki at al. Radiat. Phys. Chem. 45, 657 (1995)

Z.L. Peng at al. phys.stat.sol. (a) 155, 299 (1996)

Time dependence of the o-Ps intensity I 3 in HDPE (crystallinity 57%). Data collected at 300 K. The measurement was discontinued (sample separated from positron source) at point a) for 10 days, at point b) – for 2 days, and at point c) – for 17 days – process partially recoverable

J Kansy and T Suzuki, Radiation Physics and Chemistry 76 (2007) 759–765 Delayed Formation of Ps (DFP)

J Kansy and T Suzuki, Radiation Physics and Chemistry 76 (2007) 759–765

J Kansy and T Suzuki, ACTA PHYSICA POLONICA A 110 (2006), 593

e + trapping rate into free volume (  )  e+  t e+  ortho p 400 ps956 ps2.43 ns0.511

 The DFP model well described the HDPE lifetime spectra collected at room temperature  The positronium formation seems to be connected with positron trapping in free volume at vicinity of a negative charge  The decrease in efficiency of Ps formation with the time of measurement (=time of sample irradiation) is due to scavenging of quasi-free electrons by free radicals induced by the source irradiation

Address of Website with programs LT9, LT10, LT Polymer and others: