Electron impact excitation of Kr XXVIII

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• 作者：K.M. Aggarwal^a ; ^{K.Aggarwal@qub.ac.uk} ; F.P. Keenan^a ; K.D. Lawson^b
• 刊名：Atomic Data and Nuclear Data Tables
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：97
• 期：3
• 页码：225-344
• 全文大小：1340 K

文摘

Collision strengths (Ω) are calculated for all 6328 transitions among the lowest 113 levels belonging to the 2s²2p⁵,2s2p⁶,2s²2p⁴3ℓ,2s2p⁵3ℓ, and 2p⁶3ℓ configurations of fluorine-like krypton, Kr XXVIII, using the Dirac Atomic R-matrix Code. All partial waves with angular momentum J40 are included, sufficient for the convergence of Ω for forbidden transitions. For allowed transitions a top-up is employed to obtain converged values of Ω up to an energy of 400 Ryd. Resonances in the thresholds region are resolved on a narrow energy mesh, and results for effective collision strengths () are obtained after averaging the values of Ω over a Maxwellian distribution of electron velocities. Values of are reported over a wide temperature range below , and the accuracy of the results is assessed. In addition, effective collision strengths are listed for the temperature range , obtained from non-resonant collision strengths generated with the FAC code.