Enhancement of electron-ion recombination rates at low energy range in the heavy ion storage ring CSRm*
文献类型：期刊论文
| 作者 | Khan, Nadir2,3; Huang, Zhong-Kui3 ; Wen, Wei-Qiang2,3; Wang, Shu-Xing1; Wang, Han-Bing3; Ma, Wan-Lu1; Zhu, Xiao-Long2,3; Zhao, Dong-Mei3; Mao, Li-Jun2,3; Li, Jie3
|
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 29期号:3页码:7 |
| 关键词 | storage ring electron cooler highly charged ions radiative recombination enhancement |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/ab69eb |
| 通讯作者 | Wen, Wei-Qiang(wenweiqiang@impcas.ac.cn) ; Ma, Xin-Wen(x.ma@impcas.ac.cn) |
| 英文摘要 | Recombination of Ar14+, Ar15+, Ca16+, and Ni19+ ions with electrons has been investigated at low energy range based on the merged-beam method at the main cooler storage ring CSRm in the Institute of Modern Physics, Lanzhou, China. For each ion, the absolute recombination rate coefficients have been measured with electron-ion collision energies from 0 meV to 1000 meV which include the radiative recombination (RR) and also dielectronic recombination (DR) processes. In order to interpret the measured results, RR cross sections were obtained from a modified version of the semi-classical Bethe and Salpeter formula for hydrogenic ions. DR cross sections were calculated by a relativistic configuration interaction method using the flexible atomic code (FAC) and AUTOSTRUCTURE code in this energy range. The calculated RR + DR rate coefficients show a good agreement with the measured value at the collision energy above 100 meV. However, large discrepancies have been found at low energy range especially below 10 meV, and the experimental results show a strong enhancement relative to the theoretical RR rate coefficients. For the electron-ion collision energy below 1 meV, it was found that the experimentally observed recombination rates are higher than the theoretically predicted and fitted rates by a factor of 1.5 to 3.9. The strong dependence of RR rate coefficient enhancement on the charge state of the ions has been found with the scaling rule of q(3.0), reproducing the low-energy recombination enhancement effects found in other previous experiments. |
| WOS关键词 | DIELECTRONIC RECOMBINATION ; RADIATIVE RECOMBINATION ; RATE COEFFICIENTS ; FE |
| 资助项目 | Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000521486100001 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL | [http://119.78.100.186/handle/113462/140690]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wen, Wei-Qiang; Ma, Xin-Wen |
| 作者单位 | 1.Univ Sci & Technol China, Dept Modern Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Khan, Nadir,Huang, Zhong-Kui,Wen, Wei-Qiang,et al. Enhancement of electron-ion recombination rates at low energy range in the heavy ion storage ring CSRm*[J]. CHINESE PHYSICS B,2020,29(3):7. |
| APA | Khan, Nadir.,Huang, Zhong-Kui.,Wen, Wei-Qiang.,Wang, Shu-Xing.,Wang, Han-Bing.,...&Ma, Xin-Wen.(2020).Enhancement of electron-ion recombination rates at low energy range in the heavy ion storage ring CSRm*.CHINESE PHYSICS B,29(3),7. |
| MLA | Khan, Nadir,et al."Enhancement of electron-ion recombination rates at low energy range in the heavy ion storage ring CSRm*".CHINESE PHYSICS B 29.3(2020):7. |
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。