Resonance excitation process for Ni-like gold |
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Authors: | Yang Zhang Chong-Yang Chen Yan-Sen Wang Ya-Ming Zou |
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Institution: | aShang EBIT Lab, Institute of Modern Physics, Fudan University, Shanghai 200433, PR China;bApplied Ion Beam Physics Laboratory (Key Laboratory of the Ministry of Education), Fudan University, Shanghai 200433, PR China |
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Abstract: | A detailed and large-scale calculation on the resonant excitation rate coefficients from the ground state to the 106 fine-structure levels belonging to 3l174l′(l=0,1,2;l′=0,1,2,3) configurations of Ni-like gold have been performed using the relativistic distorted-wave approximation. The contributions through all possible Cu-like doubly excited states 3l174l′n″l″and 3l175l′n″l″(n″≤15,l″≤8) are calculated explicitly. The radiative damping effects on resonant excitation rates are studied. Significant effects arising from decays to autoionizing levels are also investigated. The n−3scaling law is investigated and is used to obtain the contributions from high-n configurations. Contributions from resonant excitation are found to be as important as direct excitation processes for most transitions. In some cases, resonant excitation can enhance the excitation rate coefficients by an order of magnitude. In addition, the total dielectronic recombination rate coefficients of Ni-like gold are also presented and compared with other works. |
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Keywords: | Ni-like gold Resonance excitation Rate coefficient Relativistic distorted-wave approximation |
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