Selection rules for electric multipole transition of diatomic molecule in scattering experiments

doi:10.1088/1674-1056/24/4/043101

中国物理B ›› 2015, Vol. 24 ›› Issue (4): 43101-043101.doi: 10.1088/1674-1056/24/4/043101

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Selection rules for electric multipole transition of diatomic molecule in scattering experiments

朱林繁^{a b}, 田红春^{a b}, 刘亚伟^{a b}, 康旭^{a b}, 刘国兴^{a b}

a Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
b Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China

收稿日期:2014-10-30 修回日期:2015-01-22 出版日期:2015-04-05 发布日期:2015-04-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. U1332204, 11274291, and 11320101003).

Selection rules for electric multipole transition of diatomic molecule in scattering experiments

Zhu Lin-Fan (朱林繁)^{a b}, Tian Hong-Chun (田红春)^{a b}, Liu Ya-Wei (刘亚伟)^{a b}, Kang Xu (康旭)^{a b}, Liu Guo-Xing (刘国兴)^{a b}

a Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
b Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China

Received:2014-10-30 Revised:2015-01-22 Online:2015-04-05 Published:2015-04-05
Contact: Zhu Lin-Fan E-mail:lfzhu@ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. U1332204, 11274291, and 11320101003).

摘要/Abstract

摘要：

The knowledge of the energy level structures of atoms and molecules is mainly obtained by spectroscopic experiments. Both photoabsorption and photoemission spectra are subject to the electric dipole selection rules (also known as optical selection rules). However, the selection rules for atoms and molecules in the scattering experiments are not identical to those in the optical experiments. In this paper, based on the theory of the molecular point group, the selection rules are derived and summarized for the electric monopole, electric dipole, electric quadrupole, and electric octupole transitions of diatomic molecules under the first Born approximation in scattering experiments. Then based on the derived selection rules, the electron scattering spectra and x-ray scattering spectra of H₂, N₂, and CO at different momentum transfers are explained, and the discrepancies between the previous experimental results measured by different groups are elucidated.

关键词: selection rule, molecular point group, electron scattering, x-ray scattering

Abstract:

Key words: selection rule, molecular point group, electron scattering, x-ray scattering

中图分类号: (Theory of electronic structure, electronic transitions, and chemical binding)

31.10.+z

34.50.-s (Scattering of atoms and molecules) 31.15.xh (Group-theoretical methods)

朱林繁, 田红春, 刘亚伟, 康旭, 刘国兴. Selection rules for electric multipole transition of diatomic molecule in scattering experiments[J]. 中国物理B, 2015, 24(4): 43101-043101.

Zhu Lin-Fan (朱林繁), Tian Hong-Chun (田红春), Liu Ya-Wei (刘亚伟), Kang Xu (康旭), Liu Guo-Xing (刘国兴). Selection rules for electric multipole transition of diatomic molecule in scattering experiments[J]. Chin. Phys. B, 2015, 24(4): 43101-043101.

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Selection rules for electric multipole transition of diatomic molecule in scattering experiments

Selection rules for electric multipole transition of diatomic molecule in scattering experiments

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