W^(65+)—W^(71+)离子2s_(1/2)—2p_(3/2)电子碰撞激发过程及相应辐射跃迁谱线极化度的理论研究  

Theoretical study on electron-impact excitation processes and the relevant polarization of radiation of 2s_(1/2)—2p_(3/2) in W^(65+) through W^(71+)

作　　者：马小云[1] 董晨钟[1] 武中文[1] 蒋军[1] 颉录有[1] 

机构地区：[1]甘肃省原子分子物理与功能材料重点实验室、西北师范大学物理与电子工程学院,兰州730070

出　　处：《物理学报》2012年第21期204-211,共8页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:11274254,10964010,11147018);国家自然科学基金重大研究计划(批准号:91126007);甘肃省中青年科技基金(批准号:1107RJYA003);甘肃省高等学校科研业务费专项基金资助的课题~~

摘　　要：利用基于多组态Dirac-Fock理论方法的原子结构及性质计算程序GRASP92,详细研究了类氟W^(65+)到类锂W^(71+)离子的2p_(38/2)—2s_(1/2)跃迁性质.计算结果与Podpaly等[Phys.Rev.A 80 052504(2009)]的实验结果符合得非常好.在此基础上,利用全相对论扭曲波方法研究了2s_(1/2)—2p_(1/2)的电子碰撞激发总截面和磁子能级碰撞激发截面以及部分谱线的线性极化度,分析了电子碰撞激发截面和谱线线性极化度随碰撞能量的变化规律.In this paper, the excitation energy and radiative transition probabilities are calculated for 2p3/2-2s1/2 transition in W65＋ through W71＋ ions, by using GRASP92 package based on the multi-configuration Dirac-Fock method. The present calculations are compared with other theoretical and experimental results [Podpaly et al. 2009 Phys. Rev. A 80 052504], and they are in good agreement each other. Furthermore, the total cross section and the magnetic sublevels cross section for the 2s1/2-2p3/2 excitation in W65＋ through W71＋ ions as well as the polarization of resulting transitional lines are calculated, with a fully relativistic distorted-wave method. Based on the calculation, the variations of the excitation cross sections and polarization with the increase of incident electron energy are discussed systematically.

关 键 词：高离化态钨离子 电子碰撞激发 跃迁概率 线性极化度 

分 类 号：O561.5[理学—原子与分子物理]