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Modification of source contribution in PALS by simulation using Geant4 code
Ning X(宁霞); Cao XZ(曹兴忠); Li C(李崇); Zhang P(张鹏); Gong YH(龚毅豪); Xia R(夏锐); Wang BY(王宝义); Wei L(魏龙); Ning, X; Cao, XZ; Li, C; Li, DM; Zhang, P; Gong, YH; Xia, R; Wang, BY; Wei, L
2017
Source PublicationNUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISSN0168-583X
EISSN1872-9584
Volume397Pages:75-81
SubtypeArticle
AbstractThe contribution of positron source for the results of a positron annihilation lifetime spectrum (PALS) is simulated using Geant4 code. The geometrical structure of PALS measurement system is a sandwich structure: the Na-22 radiation source is encapsulated by Kapton films, and the specimens are attached on the outside of the films. The probabilities of a positron being annihilated in the films, annihilated in the targets, and the effect of positrons reflected back from the specimen surface, are simulated. The probability of a positron annihilated in the film is related to the species of targets and the source film thickness. The simulation result is in reasonable agreement with the available experimental data. Thus, modification of the source contribution calculated by Geant4 is viable, and it beneficial for the analysis of the results of PALS. (C) 2017 Elsevier B.V. All rights reserved.
KeywordPositron annihilation lifetime spectrum Geant4 simulation Kapton film Diffusion and reflection Source contribution
DOI10.1016/j.nimb.2017.02.038
WOS KeywordPOSITRON-ANNIHILATION SPECTROSCOPY ; LIFETIME ; COMPOSITES ; DEFECTS ; BACKSCATTERING ; PROGRAM ; NICKEL
Indexed BySCI ; EI ; SCOPUS ; ADS
Language英语
WOS Research AreaInstruments & Instrumentation ; Nuclear Science & Technology ; Physics
WOS SubjectInstruments & Instrumentation ; Nuclear Science & Technology ; Physics, Atomic, Molecular & Chemical ; Physics, Nuclear
WOS IDWOS:000399627100011
EI Accession Number20171103432767
EI KeywordsPolyimides - Positron annihilation spectroscopy - Positrons
EI Classification Number815.1.1 Organic Polymers
ADS Bibcode2017NIMPB.397...75N
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017NIMPB.397...75N
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017NIMPB.397...75N/citations
Citation statistics
Cited Times:13 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284888
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Ning X,Cao XZ,Li C,et al. Modification of source contribution in PALS by simulation using Geant4 code[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2017,397:75-81.
APA 宁霞.,曹兴忠.,李崇.,张鹏.,龚毅豪.,...&Wei, L.(2017).Modification of source contribution in PALS by simulation using Geant4 code.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,397,75-81.
MLA 宁霞,et al."Modification of source contribution in PALS by simulation using Geant4 code".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 397(2017):75-81.
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