Study of (e, 2e) process on potassium at 6 eV–60 eV above threshold in second-order Born approximation
Wang Yang (王旸), Zhou Ya-Jun (周雅君), Jiao Li-Guang (焦利光 )
Center for Theoretical Atomic and Molecular Physics, Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
Abstract The standard distorted wave Born approximation (DWBA) method has been extended to second-order Born amplitude in order to describe the multiple interactions between the projectile and the atomic target. Second-order DWBA calculations have been preformed to investigate the triple differential cross sections (TDCS) of coplanar doubly symmetric (e, 2e) collisions for alkali target potassium at excess energies of 6 eV-60 eV. Comparing with the first-order DWBA calculations before, the present theoretical model improves the degree of agreement with experiments, especially for backward scattering angle 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 in low and intermediate energy range.
Wang Yang (王旸), Zhou Ya-Jun (周雅君), Jiao Li-Guang (焦利光 ) Study of (e, 2e) process on potassium at 6 eV–60 eV above threshold in second-order Born approximation 2012 Chin. Phys. B 21 083401
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