Electron impact excitation rate coefficients of N II ion

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

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.

Keywords: relativistic distorted-wave method multiconfiguration Dirac–Fork method configuration interaction rate coefficients

Received: 06 May 2009
Revised: 23 February 2010
Accepted manuscript online:

PACS:	3120
	3130
	3450H
	3480D

Fund: 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).

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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 2010 Chin. Phys. B 19 093101

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Electron impact excitation rate coefficients of N II ion

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