Differential cross sections of elastic electron scattering from CH4, CF4 and SF6 in the energy range 100--700eV
Ma Er-Jun(马二俊)a)b)c), Ma Yu-Gang(马余刚)a), Cai Xiang-Zhou(蔡翔舟)a), Fang De-Qing(方德清)a), Shen Wen-Qing(沈文庆)a), and Tian Wen-Dong(田文栋)a)
a Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; b Changshu Institute of Technology, Changshu 215500, China; c Graduate School of Chinese Academy of Sciences, Beijing 100039, China
Abstract We investigate the differential cross sections (DCS) of elastic electron scattering from CH$_{4}$, CF$_{4}$ and SF$_{6}$ at six impact energies in a range of 100--700 eV by employing the independent atom model (IAM) together with the relativistic partial waves. The atom is present in an optical potential which is complex, spherically symmetric, and energy dependent. The optical potential of the atom is the sum of the direct static, dynamic polarization, local exchange and modified absorption potentials. The results obtained by using a modified absorption potential show significant improvements on the unmodified absorption potential results. The present results are generally in good agreement with experimental data available. In addition, the present results indicate that the structure of molecule manifests the observable effects on electron--molecule scattering.
(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
Cite this article:
Ma Er-Jun(马二俊), Ma Yu-Gang(马余刚), Cai Xiang-Zhou(蔡翔舟), Fang De-Qing(方德清), Shen Wen-Qing(沈文庆), and Tian Wen-Dong(田文栋) Differential cross sections of elastic electron scattering from CH4, CF4 and SF6 in the energy range 100--700eV 2007 Chinese Physics 16 3339
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