Published October 2003
| Version v1
Journal article
Positronium fraction in polymer spectra determined by ETLA model
Creators
Description
A theoretical model (ETLA) is tested by means of amorphous poly(methylphenyl-silenemethylene) (PMPSM) and high-density semicrystalline polyethylene (PE) lifetime spectra. The ETLA main assumption is a finite time of positronium (Ps) localization. The spectra are analyzed with a new version of LT program, which enables one to fit many spectra simultaneously. Estimated values of the localization time constants are 137 ps for PMPSM and 101 ps for PE. The spectra are measured at T<Tg one by one for 1 h each. The positron irradiation effect is observed and electron detrapping time constants are determined
Additional details
Identifiers
- DOI
- 10.1016/S0969-806X(03)00217-2;
- arXiv
- arXiv:math/0001052v1;
- PII
- S0969806X03002172;
Publishing Information
- Journal Title
- Radiation Physics and Chemistry (1993)
- Journal Volume
- 68
- Journal Issue
- 3-4
- Journal Page Range
- p. 497-500
- ISSN
- 0969-806X
- CODEN
- RPCHDM
Conference
- Title
- 7. international conference on positron and positronium chemistry
- Dates
- 7-12 Jul 2002
- Place
- Knoxville, TN (United States)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- Israel
- INIS RN
- 35028721
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANNIHILATION; COMPUTER CODES; LIFETIME; ORGANIC POLYMERS; POLYETHYLENES; POSITRONIUM; POSITRONS; SPECTRA UNFOLDING; SPECTROSCOPY; TIME DEPENDENCE; TRAPS
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; DATA PROCESSING; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; LEPTONS; MATTER; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PARTICLE INTERACTIONS; POLYMERS; POLYOLEFINS; PROCESSING
Optional Information
- Copyright
- Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.