Modification of source contribution in PALS by simulation using Geant4 code
文献类型：期刊论文
| 作者 | Gong, YH ; Wei, L; Wang, BY; Xia, R; Zhang, P; Li, DM; Li, C; Cao, XZ; Ning, X; Wei L(魏龙)
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| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
 |
| 出版日期 | 2017 |
| 卷号 | 397页码:75-81 |
| 关键词 | Positron annihilation lifetime spectrum Geant4 simulation Kapton film Diffusion and reflection Source contribution |
| ISSN号 | 0168-583X |
| DOI | 10.1016/j.nimb.2017.02.038 |
| 文献子类 | Article |
| 英文摘要 | The 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. |
| 电子版国际标准刊号 | 1872-9584 |
| WOS关键词 | POSITRON-ANNIHILATION SPECTROSCOPY ; LIFETIME ; COMPOSITES ; DEFECTS ; BACKSCATTERING ; PROGRAM ; NICKEL |
| WOS研究方向 | Instruments & Instrumentation ; Nuclear Science & Technology ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000399627100011 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284888]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Gong, YH,Wei, L,Wang, BY,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 | Gong, YH.,Wei, L.,Wang, BY.,Xia, R.,Zhang, P.,...&宁霞.(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 | Gong, YH,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. |
入库方式： OAI收割
来源：高能物理研究所
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