Electron impact excitation of He-like ions
Electron impact excitation of He-like ions
复制标题
类He离子的电子碰撞激发
DOI：
10.1088/0022-3700/18/5/016
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
N. Badnell
中科院分区：
文献类型：
--
作者：
N. Badnell
本文采用等效电子冻结核近似研究了类氦离子的电子碰撞激发。由此产生的碰撞方程求解使用五态库仑交换扭曲波近似，其中包括占主导地位的库仑交换扭曲势准确。计算了Li+、Be 2+、B3+、C4+、N5+、O 6+、Ne 8+、Mg 10+、Si 12+、Ca 18+和Fe 24+的11 S、23 S、21 S、23 P和21 P态之间的所有非弹性跃迁以及入射电子能量从阈值到4.0 Z ~ 2赖德的无限Z极限的标度总碰撞强度。本结果与其他工作者对O ~（6+）基态跃迁的密耦合和扭曲波计算结果吻合得很好。
The electron impact excitation of He-like ions is studied using an equivalent-electron frozen-core approximation that was developed in an earlier paper on He. The resulting collision equations are solved using a five-state Coulomb exchange distorted-wave approximation that includes the dominant monopole exchange distorting potential exactly. Results are presented for scaled total collision strengths for all inelastic transitions between the 11S, 23S, 21S, 23P and 21P states of Li+, Be2+, B3+, C4+, N5+, O6+, Ne8+, Mg10+, Si12+, Ca18+ and Fe24+, as well as for the infinite Z limit, for incident electron energies from threshold up to 4.0Z2 Ryd. The present results are in good agreement with those of close-coupling and distorted-wave calculations by other workers for transitions from the ground state in O6+.