Computation of electron-impact K-shell ionization cross sections of atoms
Computation of electron-impact K-shell ionization cross sections of atoms
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DOI：
10.1103/physreva.71.032715
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发表时间：
2005-03
影响因子：
2.9
通讯作者：
M. A. Uddin;A. Haque;M. Billah;A. Basak;K. Karim;B. Saha
中科院分区：
文献类型：
--
作者：
M. A. Uddin;A. Haque;M. Billah;A. Basak;K. Karim;B. Saha
采用最近提出的改进的二元相遇偶极（RQIBED）模型的修改版本[Uddin等人，Phys.Rev.A70，032706（2004）]，其结合了离子和相对论效应。在RQIBED模型中，使用固定的两个参数的通用值，即使在相对论能量下，所有目标的实验截面也能令人满意地再现。相对论效应被发现是显着的，在所有的目标，除了C，是深刻的Ag和Sn。
The total cross sections of electron impact single K-shell ionization of atomic targets, with a wide range of atomic numbers from Z=6-50, are evaluated in the energy range up to about 10 MeV employing the recently proposed modified version of the improved binary-encounter dipole (RQIBED) model [Uddin et al., Phys. Rev. A 70, 032706 (2004)], which incorporates the ionic and relativistic effects. The experimental cross sections for all targets are reproduced satisfactorily even in the relativistic energies using fixed generic values of the two parameters in the RQIBED model. The relativistic effect is found to be significant in all targets except for C, being profound in Ag and Sn.