Differential excitation cross sections for electron impact on Li+: A study of continuum coupling effects.
Differential excitation cross sections for electron impact on Li+: A study of continuum coupling effects.
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电子对 Li 的影响的差分激发截面：连续介质耦合效应的研究。
DOI：
10.1103/physreva.42.248
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发表时间：
1990
影响因子：
2.9
通讯作者：
Pindzola Ms
中科院分区：
文献类型：
--
作者：
Griffin Dc;Pindzola Ms
计算了类氦离子Li{sup +}中从1 {sup 1}S到2 {sup 3}{ital S}、2 {sup 1}{ital S}、2 {sup 3}{ital P}和2 {sup 1}{ital P}跃迁的微分激发截面，研究了它们对连续耦合效应的敏感性。比较了非统一畸变波、五态统一畸变波、五态紧密耦合和十一态紧密耦合的计算结果。结果表明，即使在总截面相当接近的情况下，在不同的近似水平下，截面形状作为散射角的函数可能会有显著的不同。
Differential excitation cross sections for the transitions from 1 {sup 1}S to 2 {sup 3}{ital S}, 2 {sup 1}{ital S}, 2 {sup 3}{ital P}, and 2 {sup 1}{ital P} in He-like Li{sup +} are calculated in the distorted-wave and close-coupling approximations in order to study their sensitivity to continuum coupling effects. Comparisons are made between nonunitarized distorted-wave, 5-state unitarized distorted-wave, 5-state close-coupling, and 11-state close-coupling calculations. The results indicate that the shape of the cross sections, as a function of scattering angle, can be significantly different for the various levels of approximation, even when the total cross sections are in reasonably close agreement.