Differential cross sections of elastic electron scattering from CH4, CF4 and SF6 in the energy range 100--700eV

doi:10.1088/1009-1963/16/11/033

中国物理B ›› 2007, Vol. 16 ›› Issue (11): 3339-3344.doi: 10.1088/1009-1963/16/11/033

Differential cross sections of elastic electron scattering from CH₄, CF₄ and SF₆ in the energy range 100--700eV

马二俊, 马余刚, 蔡翔舟, 方德清, 沈文庆, 田文栋

出版日期:2007-11-20 发布日期:2007-11-20

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)

^aShanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; ^bChangshu Institute of Technology, Changshu 215500, China; ^cGraduate School of Chinese Academy of Sciences, Beijing 100039, China

Online:2007-11-20 Published:2007-11-20

摘要/Abstract

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.

Key words: differential cross sections, independent atom model, electron–molecule scattering, rela-tivistic partial waves, modified absorption potential

中图分类号: (Elastic scattering)

34.80.Bm

34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))

马二俊, 马余刚, 蔡翔舟, 方德清, 沈文庆, 田文栋. Differential cross sections of elastic electron scattering from CH₄, CF₄ and SF₆ in the energy range 100--700eV[J]. 中国物理B, 2007, 16(11): 3339-3344.

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[J]. Chinese Physics, 2007, 16(11): 3339-3344.

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Differential cross sections of elastic electron scattering from CH₄, CF₄ and SF₆ in the energy range 100--700eV

Differential cross sections of elastic electron scattering from CH₄, CF₄ and SF₆ in the energy range 100--700eV

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