Resonance Excitation Rate Coefficient of Ni-Like Tantalum
SHEN Tian-Ming1,2, CHEN Chong-Yang1,2, WANG Yan-Sen1,2, GU Ming-Feng3
1Shanghai EBIT Lab, Modern Physics Institute, Fudan University, Shanghai 2004332The Key Lab of Applied Ion Beam Physics (Ministry of Education), Fudan University, Shanghai 2004333Department of Physics, Stanford University, Stanford, CA 94305, USA
Resonance Excitation Rate Coefficient of Ni-Like Tantalum
1Shanghai EBIT Lab, Modern Physics Institute, Fudan University, Shanghai 2004332The Key Lab of Applied Ion Beam Physics (Ministry of Education), Fudan University, Shanghai 2004333Department of Physics, Stanford University, Stanford, CA 94305, USA
摘要The ab initio calculations of electron-impact resonant excitation rate coefficients from the ground level to 54 fine-structure levels of 3d94l(l=s,p,d,f) configurations of Ni-like tantalum ion are performed by using a fully relativistic distorted-wave approximation. The configuration-interaction effects are taken into account. The decays to autoionizing levels possibly followed by autoionization cascades are also included in the calculation. The contributions from doubly-excited intermediate states of Cu-like 3l17n'l'n''l''(n'=4,5; n''=5-15) are calculated explicitly, and the contributions from high Rydberg states (n''>15) are taken into account by using n-3 scaling law. The present results should be more accurate than the existent calculations.
Abstract：The ab initio calculations of electron-impact resonant excitation rate coefficients from the ground level to 54 fine-structure levels of 3d94l(l=s,p,d,f) configurations of Ni-like tantalum ion are performed by using a fully relativistic distorted-wave approximation. The configuration-interaction effects are taken into account. The decays to autoionizing levels possibly followed by autoionization cascades are also included in the calculation. The contributions from doubly-excited intermediate states of Cu-like 3l17n'l'n''l''(n'=4,5; n''=5-15) are calculated explicitly, and the contributions from high Rydberg states (n''>15) are taken into account by using n-3 scaling law. The present results should be more accurate than the existent calculations.
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2007, Vol. 24 
