Electron impact excitation rate coefficients of N II ion

doi:10.1088/1674-1056/19/9/093101

中国物理B ›› 2010, Vol. 19 ›› Issue (9): 93101-093101.doi: 10.1088/1674-1056/19/9/093101

Electron impact excitation rate coefficients of N II ion

杨宁选¹, 蒋军¹, 颉录有¹, 董晨钟²

(1)College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China; (2)College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China; Joint Laboratory of Atomic and Molecular Physics, NWNU&IMP CAS, Lanzhou 730070, China

收稿日期:2009-05-06 修回日期:2010-02-23 出版日期:2010-09-15 发布日期:2010-09-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10774122 and 10876028), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070736001), and the Technology and Innovation Progra

Electron impact excitation rate coefficients of N II ion

Yang Ning-Xuan(杨宁选)^a),Dong Chen-Zhong(董晨钟)^a)b)^†, Jiang Jun(蒋军)^a), and Xie Lu-You(颉录有)^a)

^a College of Physics and Electronics Engineering, Northwest Normal University, Lanzhou 730070, China; ^b Joint Laboratory of Atomic and Molecular Physics, NWNU&IMP CAS, Lanzhou 730070, China

Received:2009-05-06 Revised:2010-02-23 Online:2010-09-15 Published:2010-09-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10774122 and 10876028), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070736001), and the Technology and Innovation Program of Northwest Normal University (Grant No. NWNU-KJCXGC-03-21).

摘要/Abstract

摘要： This paper calculates the electron impact excitation rate coefficients from the ground term 2s²2p^{2 3}P to the excited terms of the 2s²2p², 2s2p³, 2s²2p3s, 2s²2p3p, and 2s²2p3d configurations of N II. In the calculations, multiconfiguration Dirac--Fork wave functions have been applied to describe the target-ion states and relativistic distorted-wave calculation has been performed to generate fine-structure collision strengths. The collision strengths are then averaged over a Maxwellian distribution of electron velocities in order to generate the effective collision strengths. The calculated rate coefficients are compared with available experimental and theoretical data, and some good agreements are found for the outer shell electron excitations. But for the inner shell electron excitations there are still some differences between the present calculations and available experiments.

Abstract: This paper calculates the electron impact excitation rate coefficients from the ground term 2s²2p^{2 3}P to the excited terms of the 2s²2p², 2s2p³, 2s²2p3s, 2s²2p3p, and 2s²2p3d configurations of N II. In the calculations, multiconfiguration Dirac–Fork wave functions have been applied to describe the target-ion states and relativistic distorted-wave calculation has been performed to generate fine-structure collision strengths. The collision strengths are then averaged over a Maxwellian distribution of electron velocities in order to generate the effective collision strengths. The calculated rate coefficients are compared with available experimental and theoretical data, and some good agreements are found for the outer shell electron excitations. But for the inner shell electron excitations there are still some differences between the present calculations and available experiments.

Key words: relativistic distorted-wave method, multiconfiguration Dirac–Fork method, configuration interaction, rate coefficients

中图分类号:

3120

杨宁选, 董晨钟, 蒋军, 颉录有. Electron impact excitation rate coefficients of N II ion[J]. 中国物理B, 2010, 19(9): 93101-093101.

Yang Ning-Xuan(杨宁选),Dong Chen-Zhong(董晨钟), Jiang Jun(蒋军), and Xie Lu-You(颉录有). Electron impact excitation rate coefficients of N II ion[J]. Chin. Phys. B, 2010, 19(9): 93101-093101.

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Electron impact excitation rate coefficients of N II ion

Electron impact excitation rate coefficients of N II ion

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