中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
  4. 实验物理中心
Investigation on the energy loss in low energy protons interacting with hydrogen plasma

文献类型：期刊论文

作者Golubev, A.3; Hoffmann, D. H. H.1; Deng Jia-Chuan2,4; Zhao Yong-Tao4; Cheng Rui4; Zhou Xian-Ming4; Peng Hai-Bo4; Wang Yu-Yu4; Liu Shi-Dong2,4; Lei Yu4
刊名ACTA PHYSICA SINICA
出版日期2015-07-20
卷号64页码:6
关键词proton plasma target energy loss coulomb logarithm
ISSN号1000-3290
DOI10.7498/aps.64.145202
英文摘要Energy loss of protons with energy 100 keV penetrating the partially ionized hydrogen plasma target was measured. The plasma target was created by electric discharge in the hydrogen gas, the state of the plasma target was diagnosed by using the laser interferometry method: the free electron density is up to 10(16) cm(-3), temperature is about 1-2 eV, and the plasma target may exist at the microsecond level. It is found that the energy loss of protons is closely related to the free electron density, and the energy loss data enable us to infer the value of the Coulomb logarithm (10.8) for the stopping power of the free electrons. This agrees well with the theoretical prediction which is 4.3 times higher than that given by the Bethe formula for neutral hydrogen, which is a little bigger than Hoffmann's result but much smaller than Jacoby's result. Comparing our result with Hoffmann's, the energy we used is only 100 keV, much lower than 1.4 MeV/u, and the low-energy regime we applied could be the cause of the increase in the enhancement factor. However, in the comparison between our result and the Jacoby's, the effective charge for protons is almost constant, unlike the Kr+ impact in wihch the enhanced ion charge state induces the giant enhancement factor. Compared to the gas target, the energy loss enhancement factor in plasma target is 2.9.
WOS关键词HEAVY-IONS ; TARGET ; MATTER ; DENSE
资助项目National Natural Science Foundation of China[11275241] ; National Natural Science Foundation of China[11105192] ; National Natural Science Foundation of China[11075192] ; National Natural Science Foundation of China[11275238] ; National Natural Science Foundation of China[11205225] ; National Natural Science Foundation of China[11075125]
WOS研究方向Physics
语种英语
WOS记录号WOS:000362976400029
出版者CHINESE PHYSICAL SOC
资助机构National Natural Science Foundation of China
源URL[http://ir.impcas.ac.cn/handle/113462/23351]  
专题近代物理研究所_实验物理中心
近代物理研究所_兰州重离子研究装置
通讯作者Zhao Yong-Tao
作者单位1.Tech Univ Darmstad, Inst Kernphys, D-64289 Darmstadt, Germany
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Inst Theoret & Expt Phys, Moscow 117259, Russia
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Golubev, A.,Hoffmann, D. H. H.,Deng Jia-Chuan,et al. Investigation on the energy loss in low energy protons interacting with hydrogen plasma[J]. ACTA PHYSICA SINICA,2015,64:6.
APA Golubev, A..,Hoffmann, D. H. H..,Deng Jia-Chuan.,Zhao Yong-Tao.,Cheng Rui.,...&Savin, S..(2015).Investigation on the energy loss in low energy protons interacting with hydrogen plasma.ACTA PHYSICA SINICA,64,6.
MLA Golubev, A.,et al."Investigation on the energy loss in low energy protons interacting with hydrogen plasma".ACTA PHYSICA SINICA 64(2015):6.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。