| In Atomic and Molecular Physics, the theoretical study,together with rel-evant atomic data,for electron-ion collision is an important topic. It is closely related to the research of astrophysical plasma, X-ray laser and ICF (Inertially Controlled Fusion) and in the theoretical calculation. Moreover, it has a lot to do with the EBIT (Electron beam ion trap) project in the institute of modern physics of Fudan University. With electron beam energy increasing, more highly charged ions are obtained in EBIT, a full relativistic and detailed study with large-scale configuration interactions (CI) is necessary. Here,using relativistic distorted wave approximation,we carry on with the detailed and systematic research on the di-electronic recombination (DR) and the resonance exitation (RE) for Co-like ions as well as Ar-like isoelectronic sequence ions with including various physical factors. The details are as follows:1,Ab initio calculation of the total DR rate coefficient from the ground state of Co-like tantalum is performed.(1)The contributions to the total DR rate coef-ficients are explicitly calculated from the complexes of Ni-like tantalum,which are 3s23p63d3/233d5/26n'l',3s23p53d10n'l',3s3p63d10n'l',3s23p63d84ln'l',3s23p53d94ln'l', 3s3p63d94ln'l'(n'≤25) and 3s23p63d85ln'l'(n'≤9), with us considering the con-figuration interactions among complexes with the same n' and different l'. (2)The l' and n' dependences of partial DR rate coefficients are investigated.(3)The con-tributions from higher n'complexes are evaluated by a level-by-level extrapolation method. (4)The RS and NRS transitions are fully included. The possible impor-tant DAC transitions are also considered. (5)The comparison of the present results with other works shows that our calculated data is more accurate. (6)The total DR rate coefficients are fitted to an empirical formula with high accuracy.This work has been published in Chinese Physics B(see Appendix).At the same time, I take part in the calculation for DR rate coefficient of ten of the Co-like sequence ions, which include Kr9+, Mo15+, Ag20+, Xe27+, Pr32+, Dy39+, W47+, Au52+, Kr58+ and U65+. Different fitting methods are used to obtain the dependences of total rate coefficients on the temperature T and atomic number Z for Co-like isoelectronic sequence. Besides, we give some comments on the validaty of BM approximation. This work has been published in Journal of Physics B(see Appendix).2,We carry out systematic theoretical study of DR rate coefficient from the ground state of 67 ions from Z=26 to Z=92 along the Ar-like isoelectronic sequence. (1) We consider contributions to DR through six relevant K-like autoionizing inner-shell excited configuration complexes,which include 3s23p53dn'l',3s23p54ln'l', 3s3p63dn'l',3s3p64ln'l',2s22p53s23p63dn'l' and 2s2p63s23p63dn'l'(n'≤20),associated with theΔn=0 andΔn=1 core-excitations, with the configuration interactions among complexes with the same n' and different l'.(2)We investigate the l' and n' dependences of partial DR rate coefficients and DAC influences.Besides,we study of adaptability of n'-3 scaling law of the DR rates for high n' contributions for different Z ions. (3)We provide the total DR rate coefficients of Ar-like ions with different Z in different core-exitations at different temperatures. (4)We compare our results with other theoretical ones,experimental ones and BM formula. (5)We fit the DR rate coefficients of every ion along the Ar-like sequence to an empirical formula with high accuracy.The systematic theoretical study for Ar-like isoelectronic sequence ions will be submitted to Journal of Quantitative Spectroscopy Radiative Transfer.3,We study the resonance exitation process for ar-like Fe and calculate the level energy, oscillator strenghth, collision strenghth and effective collision strenghth among 190 levles. At the same time, we compare our results with the available data in theory as well as experiment.We include the following states in computa-tion:3s23p6,3s23p53d,3s3p63d,3s23p43d2,3s3p53d2,3p63d2,3s23p33d3,3s23p54l, 3s3p64l,3s23p43d4l,3s3p53d4l,3s3p43d3,3s23p23d4,3s3p33d4,3s23p33d24l and 3s3p43d24l. We take the configuration interactions among these complexes into full account.The primary features in the present work are:(1)It is closely related with theoretical significance and application back-ground.(2)We make the calculations with the theory of relativity,regarding various physical element. Compared with other available data, our results are more pre-cise. And a mass of calculations for Ar-like ions have not been reported yet.(3)On the basis of application, we present a vast amount of empirical formulas with high accuracy. |
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