高离化态氩离子产生的K_α和K_β谱线的相对论理论研究

Theoretical study of K_α and K_β spectra in highly charged argon ions

利用多组态Dirac-Fock方法,系统研究了不同离化度氩离子的Kα和Kβ线的结构以及内壳层旁观洞态和高n旁观电子对其结构的影响.结果表明:剥离1s、2l壳层电子而引起的Kα和Kβ线的“紫移”要强于剥离3l壳层电子的;最内层的1s旁观洞态产生的伴线与Kα和Kβ线离得较远,而较外层的2l、3l伴线与Kα和Kβ线基本重合在一起;3pnl-1snl和2pnl-1snl(n=3…6;l=0…5)类型跃迁产生的伴线的形状和位置随nl的增加逐渐接近Kα和Kβ线.

A systematic theoretical study on the structures of the Kα and Kβ X-ray of argon ions at various ionization stages and the influences of the inner-shell holes and high-n spectator electrons on the Kα and Kβ X-ray has been carried out by using Multiconfiguration Dirac-Fock method. The results show that the ＂purple-shift＂ of the Kα and Kβ X-ray caused by removing the electrons of 1s and 2l shell is bigger than the case of removing the electrons of 3l shell; the satellite-lines produced by the most inner-shell holes （1s shell ） are far away from the Kα and Kβ X-ray, but the satellite-lines produced by the outer-shell holes （2l and 3l shells ） are very near to the Kα and Kβ X-ray; the shapes and positions of the satellite-lines engendered by the 3pnl- 1snl and 2pnl- 1snl （ n = 3…6 ; l = 0…5） transitions are closed to the Kα and Kβ X-ray with the increase of the n and l quantum numbers.