High order Correlation polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons

doi:10.1088/1674-1056/18/11/039

中国物理B ›› 2009, Vol. 18 ›› Issue (11): 4846-4851.doi: 10.1088/1674-1056/18/11/039

High order Correlation polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons

曾阳阳¹, 冯灏², 孙卫国³

(1)Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China; (2)School of Physics and Chemistry, Xihua University, Chengdu 610039, China; (3)School of Physics and Chemistry, Xihua University, Chengdu 610039, China;Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

收稿日期:2008-09-24 修回日期:2009-02-24 出版日期:2009-11-20 发布日期:2009-11-20
基金资助:
Project supported by National Natural Science Foundation of China (Grant Nos 10504022 and 10774105).

High order Correlation--polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons

Feng Hao(冯灏)^a)†,Sun Wei-Guo(孙卫国)^a)b), and Zeng Yang-Yang(曾阳阳)^b)

^a School of Physics and Chemistry, Xihua University, Chengdu 610039, China; ^b Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

Received:2008-09-24 Revised:2009-02-24 Online:2009-11-20 Published:2009-11-20
Supported by:
Project supported by National Natural Science Foundation of China (Grant Nos 10504022 and 10774105).

摘要/Abstract

摘要： This paper introduces a correlation--polarization potential with high order terms for vibrational excitation in electron--molecule scattering. The new polarization potential generalizes the two-term approximation so that it can better reflect the dependence of correlation and polarization effects on the position coordinate of the scattering electron. It applies the new potential on the vibrational excitation scattering from N₂ in an energy range which includes the ²П_g shape resonance. The good agreement of theoretical resonant peaks with experiments shows that polarization potentials with high order terms are important and should be included in vibrational excitation scattering.

Abstract: This paper introduces a correlation--polarization potential with high order terms for vibrational excitation in electron--molecule scattering. The new polarization potential generalizes the two-term approximation so that it can better reflect the dependence of correlation and polarization effects on the position coordinate of the scattering electron. It applies the new potential on the vibrational excitation scattering from N₂ in an energy range which includes the ²$\Pi$_g shape resonance. The good agreement of theoretical resonant peaks with experiments shows that polarization potentials with high order terms are important and should be included in vibrational excitation scattering.

Key words: vibrational excitation scattering, correlation--polarization, high order, resonant

中图分类号: (Elastic scattering)

34.80.Bm

34.80.Gs (Molecular excitation and ionization) 33.15.Mt (Rotation, vibration, and vibration-rotation constants)

冯灏, 孙卫国, 曾阳阳. High order Correlation polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons[J]. 中国物理B, 2009, 18(11): 4846-4851.

Feng Hao(冯灏),Sun Wei-Guo(孙卫国), and Zeng Yang-Yang(曾阳阳) . High order Correlation--polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons[J]. Chin. Phys. B, 2009, 18(11): 4846-4851.

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High order Correlation polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons

High order Correlation--polarization potential for vibrational excitation scattering of diatomic molecules by low-energy electrons

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