A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D1 lines perturbed by noble gases He and Ar

doi:10.1088/1674-1056/27/1/013201

中国物理B ›› 2018, Vol. 27 ›› Issue (1): 13201-013201.doi: 10.1088/1674-1056/27/1/013201

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar

Wei Zhang(张伟), Yanchao Shi(史彦超), Bitao Hu(胡碧涛), Yi Zhang(张毅)

School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

收稿日期:2017-04-01 修回日期:2017-09-11 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: Yi Zhang E-mail:yizhang@lzu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grants Nos. 11405077 and 11575073).

A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar

Wei Zhang(张伟), Yanchao Shi(史彦超), Bitao Hu(胡碧涛), Yi Zhang(张毅)

School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

Received:2017-04-01 Revised:2017-09-11 Online:2018-01-05 Published:2018-01-05
Contact: Yi Zhang E-mail:yizhang@lzu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grants Nos. 11405077 and 11575073).

摘要/Abstract

摘要： In this work, a new full quantum method is proposed to calculate the broadening and shift coefficients of the D₁ line in neutral collision. Based on the variable phase approach and Baranger theory, this method calculates the scattering phase shift instead of scattering matrix elements in order to simplify the calculation. As an illustration, this method is used to calculate the broadening and shift coefficients of the absorption lines of alkali metal atom Rb, as it collides with buffer gas He and Ar, in a temperature range from 150 K to 800 K. With a comparison with other calculations and experiment measurements, the reasonable agreements in all cases demonstrate the validity and simplicity of this method.

关键词: collisional broadening and shift, variable phase method, phase shift

Abstract: In this work, a new full quantum method is proposed to calculate the broadening and shift coefficients of the D₁ line in neutral collision. Based on the variable phase approach and Baranger theory, this method calculates the scattering phase shift instead of scattering matrix elements in order to simplify the calculation. As an illustration, this method is used to calculate the broadening and shift coefficients of the absorption lines of alkali metal atom Rb, as it collides with buffer gas He and Ar, in a temperature range from 150 K to 800 K. With a comparison with other calculations and experiment measurements, the reasonable agreements in all cases demonstrate the validity and simplicity of this method.

Key words: collisional broadening and shift, variable phase method, phase shift

中图分类号: (Line shapes, widths, and shifts)

32.70.Jz

34.50.-s (Scattering of atoms and molecules) 03.65.Nk (Scattering theory)

张伟, 史彦超, 胡碧涛, 张毅. A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar[J]. 中国物理B, 2018, 27(1): 13201-013201.

Wei Zhang(张伟), Yanchao Shi(史彦超), Bitao Hu(胡碧涛), Yi Zhang(张毅). A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar[J]. Chin. Phys. B, 2018, 27(1): 13201-013201.

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A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar

A new fully quantum-mechanical method used to calculate the collisional broadening coefficients and shift coefficients of Rb D₁ lines perturbed by noble gases He and Ar

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