Electron-impact ionization of helium for equal-energy-sharing kinematics
Electron-impact ionization of helium for equal-energy-sharing kinematics
复制标题
用于等能量共享运动学的氦电子碰撞电离
DOI：
10.1103/physreva.71.052716
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发表时间：
2005
影响因子：
2.9
通讯作者：
K. Bartschat
中科院分区：
文献类型：
--
作者：
A. Stelbovics;I. Bray;D. Fursa;K. Bartschat
分析了电子-氦单电离的紧耦合方法，确定了确定等能和不等能出射电子的散射幅度的几种方法。然而，不同的定义都导致了相同的横截面。采用Laguerre(CCC-L)和盒基(CCC-B)目标函数的收敛紧耦合方法，计算了两个出射电子能量相等的氦原子的电子碰撞电离。对于所有可用的比较实例，都与实验取得了很好的绝对一致性。
The close-coupling approach to electron-helium single ionization is analyzed and several ways of defining the scattering amplitudes are determined, for both equal- and unequal-energy outgoing electrons. Nevertheless, the various definitions all lead to the same cross section. The convergent close-coupling (CCC) method with Laguerre (CCC-L) and box-based (CCC-B) target functions is applied to calculate electron-impact ionization of helium for the cases where the two outgoing electrons have equal energy. Excellent absolute agreement with experiment is obtained for all available cases of comparison.