Theoretical calculation of photoionization cross sections of B-like ions:N^(2+),O^(3+) and F^(4+)  

作　　者：王国利 周效信 

机构地区：[1]College of Physics and Electronic Engineering,Northwest Normal University [2]Joint Laboratory of Atomic and Molecular Physics,NWNU & IMP CAS

出　　处：《Chinese Physics B》2009年第9期3833-3838,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No 10674112);the Natural Science Foundation of the Gansu Province,China (Grant No 3ZS061-A25-013);the Foundation of Education Department of Gansu Province,China (Grant No 0601223);the Foundation of Northwest Normal University,China (Grant No NWNU-KJCXGC-03-21);the Foundation for Young Teacher of Northwest Normal University,China (Grant No NWNU-LKQN-08-5)

摘　　要：There can be found some notable discrepancies with regard to the resonance structures when R-matrix calculations from the Opacity Project and other sources are compared with recent absolute experimental measurements of Bizau et al [Astron. Astrophts. 439 387 （2005）] for B-like ions N^2＋, O^3＋ and F^4＋. We performed close-coupling calculations based on the R-matrix formalism for the photoionizations of ions mentioned above both for the ground states and first excited states in the near threshold regions. The present results are compared with experimental ones given by Bizau et al and earlier theoretical ones. Excellent agreement is obtained between our theoretical results and the experimental photoionization cross sections. The present calculations show a significant improvement over the previous theoretical results.There can be found some notable discrepancies with regard to the resonance structures when R-matrix calculations from the Opacity Project and other sources are compared with recent absolute experimental measurements of Bizau et al [Astron. Astrophts. 439 387 （2005）] for B-like ions N^2＋, O^3＋ and F^4＋. We performed close-coupling calculations based on the R-matrix formalism for the photoionizations of ions mentioned above both for the ground states and first excited states in the near threshold regions. The present results are compared with experimental ones given by Bizau et al and earlier theoretical ones. Excellent agreement is obtained between our theoretical results and the experimental photoionization cross sections. The present calculations show a significant improvement over the previous theoretical results.

关 键 词：photoionization N^2＋ O^3＋ F^4＋ resonance 

分 类 号：O562.4[理学—原子与分子物理] TP334.2[理学—物理]