Benchmark Integral Cross Sections for Electron Impact Ezcitation of the n = 2 States in Helium

摘要：

In this paper, we present integral cross sections (ICS) for electron impact excitation of the n=2 levels in helium in the impact energy range of 23.5 eV to 35 eV. The ICS of each final state, 23S, 21S, 23P and 21P, has been determined by integration of the angular differential cross sections (DCS) over all of 0° to 180°, where those DCS were obtained from both our previous experiments and the extrapolation using the convergent close coupling calculation. The present experimental ICS for the optically allowed 21P transition state are also compared with those obtained from the BEf-scaling method. Very good agreement between the experimental and BEf-scaled 21P ICSs is generally found in the measured impact energy region.

关键词： low energy electron impact electronic ezcitations helium

作者: M. HOSHINO H. KATO D. SUZUKI H. TANAKA I. BRAY D. V. FURSA S. J. BUCKMAN O. INGOLFSSON M. J. BRUNGER

作者单位: Department of Physics. Sophia University, Chiyoda-ku, Tokyo 102-8554, Japan Centre for Antimatter-Matter Studies, Curtin University of Technology, Perth, WA 6845, Australia Centre for Antimatter-Matter Studies, Australian National University, Canberra, ACT 0200, Australia Department of Chemistry, University of Iceland, Science Institute, Dunkaga 3, Reykjavik 107, Iceland Centre for Antimatter-Matter Studies, Flinders University, Adelaide, SA 5001, Australia

会议类型: 国际会议

会议名称: The Third China-Japan Joint Seminar on Atomic and Molecular Progress in Plasma(第三届中日等离子体中的原子分子过程国际研讨会)

会议地点: 西安

会议语种:英文

页码: 348-352

在线出版日期: 2009-10-26（万方平台首次上网日期，不代表论文的发表时间）