Vanadium K-shell X-ray emission induced by xenon ions at near the Bohr velocity
文献类型：期刊论文
| 作者 | Zhou Xian-Ming1,3,4 ; Zhao Yong-Tao2,3; Cheng Rui3; Lei Yu3; Wang Yu-Yu3; Ren Jie-Ru3,4; Liu Shi-Dong3,4; Mei Ce-Xiang2; Chen Xi-Meng1; Xiao Guo-Qing3
|
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2016-01-20 |
| 卷号 | 65页码:027901 |
| 关键词 | highly charged heavy ion X-ray binary encounter approximation effective nuclear charge |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.65.027901 |
| 英文摘要 | The X-ray emission spectra produced by 2.4-6.0 MeV Xe20+ ions impacting on vanadium surface were measured. The V K-shell X-ray production cross sections were extracted from the experimental yield data and compared with the theoretical predictions of the binary encounter approximation (BEA), the plane wave born approximation (PWBA), and the energy-loss coulomb-repulsion perturbed-stationary-state relativist (ECPSSR). In order to predict reasonably the inner-shell ionization induced by highly charged heavy ions during the asymmetric collisions at near the Bohr velocity, the corrections of BEA model are discussed. It is found that the X-ray production cross section induced by highly charged heavy ions moving at near the Bohr velocity is on the magnitude of 1 barn, which is almost four orders of magnitude larger than that induced by proton. The ECPSSR, which is regarded as the best model to simulate the inner-shell ionization by light ions, may underestimate the experimental data at least three orders of magnitude. The PWBA model presents a prediction to the results on an order of magnitude better than the ECPSSR simulation, but gives a worse tendency than the BEA model. The BEA calculations, corrected both by Coulomb repulsion and effective nuclear charge, present the best agreement with the experimental results. It is proposed, that in the energy region near the Bohr velocity, during the asymmetric collisions of Xe20+ ions with V atoms, the K-shell electron of V is ionized by direct ionization, and that it can be described by the binary encounter process between the xenon ions and the bound electrons. The X-ray production cross section can be simulated by BEA model, but the corrections of Coulomb repulsion and effective nuclear charge must be considered. |
| WOS关键词 | HEAVY CHARGED-PARTICLES ; CROSS-SECTIONS ; HOLLOW ATOMS ; VACANCY PRODUCTION ; SI-K ; IONIZATION ; COLLISIONS ; ELEMENTS ; SURFACE ; IMPACT |
| 资助项目 | National Natural Science foundation of China[11275241] ; National Natural Science foundation of China[11505248] ; National Natural Science foundation of China[11205225] ; National Natural Science foundation of China[11375034] ; National Natural Science foundation of China[11105192] ; National Natural Science foundation of China[11275238] ; Scientific Research Program of Education Bureau of Shaanxi Province, China[14JK1803] ; Scientific Research Program of Education Bureau of Shaanxi Province, China[15JK1793] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000370942000043 |
| 出版者 | CHINESE PHYSICAL SOC |
| 资助机构 | National Natural Science foundation of China ; Scientific Research Program of Education Bureau of Shaanxi Province, China |
| 源URL | [http://ir.impcas.ac.cn/handle/113462/23329]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Zhao Yong-Tao |
| 作者单位 | 1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China 2.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou Xian-Ming,Zhao Yong-Tao,Cheng Rui,et al. Vanadium K-shell X-ray emission induced by xenon ions at near the Bohr velocity[J]. ACTA PHYSICA SINICA,2016,65:027901. |
| APA | Zhou Xian-Ming.,Zhao Yong-Tao.,Cheng Rui.,Lei Yu.,Wang Yu-Yu.,...&Xiao Guo-Qing.(2016).Vanadium K-shell X-ray emission induced by xenon ions at near the Bohr velocity.ACTA PHYSICA SINICA,65,027901. |
| MLA | Zhou Xian-Ming,et al."Vanadium K-shell X-ray emission induced by xenon ions at near the Bohr velocity".ACTA PHYSICA SINICA 65(2016):027901. |
入库方式： OAI收割
来源：近代物理研究所
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