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Second-order Born calculation of coplanar symmetric (e, 2e) process on Mg |
| Zhang Yong-Zhi (张永志)a, Wang Yang (王旸)b, Zhou Ya-Jun (周雅君)b |
a Academy of Physical Science and Technology, Heilongjiang University, Harbin 150080, China;
b Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China |
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Abstract The second-order distorted wave Born approximation (DWBA) method is employed to investigate the triple differential cross sections (TDCS) of coplanar doubly symmetric (e, 2e) collisions for magnesium at excess energies of 6 eV-20 eV. Comparing with the standard first-order DWBA calculations, the inclusion of the second-order Born term in the scattering amplitude improves the degree of agreement with experiments, especially for backward scattering region of TDCS. This indicates that the present second-order Born term is capable to give a reasonable correction to DWBA model in studying coplanar symmetric (e, 2e) problems of two-valence-electron target in low energy range.
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Received: 24 September 2013
Revised: 10 December 2013
Accepted manuscript online:
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PACS:
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34.80.Dp
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(Atomic excitation and ionization)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11174066). |
Corresponding Authors:
Wang Yang
E-mail: yangwang0624@foxmail.com
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Cite this article:
Zhang Yong-Zhi (张永志), Wang Yang (王旸), Zhou Ya-Jun (周雅君) Second-order Born calculation of coplanar symmetric (e, 2e) process on Mg 2014 Chin. Phys. B 23 063402
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