Charge state distribution of O-16 from the He-4((12)c,O-16)gamma reaction of astrophysical interest studied both experimentally and theoretically
文献类型：期刊论文
| 作者 | 刘盛进;Liu, SJ; Sakurai, M; Sagara, K; Teranishi, T; Fujita, K; Yamaguchi, H; Matsuda, S; Mitsuzumi, T; Iwazaki, M; Rosary, MT |
| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
 |
| 出版日期 | 2014 |
| 卷号 | 328页码:14-19 |
| 关键词 | Charge state distribution Charge exchange cross section PWBA COW |
| 英文摘要 | In astrophysics, He-4(C-12,O-16)gamma reaction places an important role. At Kyushu University Tandem accelerator Laboratory (KUTL), the measurement of He-4(C-12,O-16)gamma cross section is in progress in the energy range of astrophysical nuclear reaction. Since the charge state of product O-16 ions after passing through the gas target is spread and only one charge state can be measured at terminal detector, it is necessary to know the charge state distribution of O-16 ions passing through the He gas target precisely. Here, we report the charge state distribution of the O-16 recoils both experimentally and theoretically. Experimentally, we measured the equilibrium charge state distribution of O-16 ions in the windowless helium gas target with the beam energy of primary O-16 ions at 7.2, 4.5, and 3.45 MeV at KUTL. The measured results showed a Gaussian distribution for the charge state fraction. Theoretically, we proposed a framework for the charge state distribution study. Charge state distribution was computed by solving a set of differential equations including a series of charge exchange cross sections. For the ionization cross section, plane-wave Born approximation was applied and modified by taking target atomic screening as a function of momentum transfer into account. For the capture cross section, continuum distorted wave approximation was applied and the influence of the gas target density was taken into account in the process of electron capture. Using above charge exchange cross sections, the charge state evolution was simulated. According to the equilibrium distribution, we compared the theoretical calculation to the experimental data. After taking into account the density effects in the charge exchange process, the theoretical charge state distributions shows a good agreement with the experimental data. Both experimental and theoretical results are useful to understand the charge fraction of recoil oxygen created via He-4(C-12,O-16)gamma reaction, especially in the energy range of astrophysical nuclear reaction. (C) 2014 Elsevier B.V. All rights reserved. |
| 学科主题 | Instruments & Instrumentation; Nuclear Science & Technology; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000337016700003 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225226]  |
| 专题 | 高能物理研究所_加速器中心 |
| 推荐引用方式 GB/T 7714 | 刘盛进；Liu, SJ,Sakurai, M,Sagara, K,et al. Charge state distribution of O-16 from the He-4((12)c,O-16)gamma reaction of astrophysical interest studied both experimentally and theoretically[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2014,328:14-19. |
| APA | 刘盛进；Liu, SJ.,Sakurai, M.,Sagara, K.,Teranishi, T.,Fujita, K.,...&Tolstikhina, IY.(2014).Charge state distribution of O-16 from the He-4((12)c,O-16)gamma reaction of astrophysical interest studied both experimentally and theoretically.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,328,14-19. |
| MLA | 刘盛进；Liu, SJ,et al."Charge state distribution of O-16 from the He-4((12)c,O-16)gamma reaction of astrophysical interest studied both experimentally and theoretically".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 328(2014):14-19. |
入库方式： OAI收割
来源：高能物理研究所
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