Abstract
The collision strengths of excitation between configuration-average levels of Au q+ ( q=47–55) by electron impact are computed systematically by using the quasirelativistic distorted-wave (QRDW) methods. The QRDW method is reconfirmed to take major relativistic effects into account as compared with the results by fully relativistic distorted wave (FRDW) method of Zhang and Sampson et al. The collision strengths are scaled and fitted with a least-squares spline method. The behavior of the collision strengths at higher impact energies is discussed. Thermal average rate coefficients can be determined by five parameters for each transition process. We also offer some typical curves which demonstrate the variation of the collision strengths with electron energies, and the variation of effective collision strengths and rate coefficients with electron temperatures. The result shows that the deviations of the single electron excited data of the nine kinds of ions around Ni-like gold is less than 10%. This is very beneficial to the average atom model which is employed to simulate dynamical processes in hot dense plasma.
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More From: Journal of Quantitative Spectroscopy and Radiative Transfer
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