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Chin. Phys. B, 2018, Vol. 27(5): 053402    DOI: 10.1088/1674-1056/27/5/053402
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Electron-impact single ionizaiton for W4+ and W5+

Denghong Zhang(张登红)1, Luyou Xie(颉录有)1, Jun Jiang(蒋军)1, Zhongwen Wu(武中文)1, Chenzhong Dong(董晨钟)1, Yinglong Shi(师应龙)2, Yizhi Qu(屈一至)3
1 Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China;
2 Department of physics, Tianshui Normal University, Tianshui 741000, China;
3 College of Material Sciences and Opto-electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Abstract  Electron-impact single ionization cross sections for Wq+ (q=4-5) were calculated using the flexible atomic code (FAC) in the level-to-level distorted-wave method, considering the explicit branching ratio. The calculated cross sections are compared with the available theoretical and experiment results in detail. In the case of the contribution from the same channles as the available theoretical results, all of the calculated ionization cross sections agree with the experimental measured cross sections. But the present calculated results are larger than the experimental measurement when all channels contributions are included. Some important channels excitation autoionization (EA) contributions, such as the excitation to higher higher nl' subshell from 4f and 5[s,p], were not included into the available theoretical calculation. In general, the distorted-wave (DW) results are overestimated.
Keywords:  tungsten ions      electron-impact ionization      cross section     
Received:  22 January 2018      Published:  05 May 2018
PACS:  34.50.Fa (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))  
  34.80.Dp (Atomic excitation and ionization)  
  32.80.Aa (Inner-shell excitation and ionization)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.2017YFA0402300,11464042,11564036,11774292,and 11464040) and the Basic Scientific Research Foundation for Institution of Higher Learning of Gansu Province,China.
Corresponding Authors:  Denghong Zhang     E-mail:  zhangdh@nwnu.edu.cn

Cite this article: 

Denghong Zhang(张登红), Luyou Xie(颉录有), Jun Jiang(蒋军), Zhongwen Wu(武中文), Chenzhong Dong(董晨钟), Yinglong Shi(师应龙), Yizhi Qu(屈一至) Electron-impact single ionizaiton for W4+ and W5+ 2018 Chin. Phys. B 27 053402

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