Open AccessTheoretical study on angular distribution and polarization characteristics of X-ray emission following dielectronic recombination of lithium-like ions
Author(s) -
Jinxia Wang,
Yanlong Shi,
Denghong Zhang,
Lu-You Xie,
Chenzhong Dong
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.233401
Subject(s) - physics , excited state , atomic physics , ion , polarization (electrochemistry) , recombination , dipole , linear polarization , lithium (medication) , magnetic dipole , radiation , nuclear physics , optics , laser , medicine , biochemistry , chemistry , quantum mechanics , gene , endocrinology
Based on the multiconfiguration Dirac-Fock method and the theory of density matrix, we have calculated the magnetic sublevel captured cross section of intermediate doubly-excited state 1s2s22p3/2J = 1 formed by dielectronic recombination of lithium-like ions (26 Z 92). Then, we obtain the angular distribution and linear polarization of X-rays of electric-dipole radiation 1s2s22p3/2J = 11s22s2J = 0. In this study, emphasis is placed on the effects of the Breit interaction on the relevant physical quantities. We find that the influences of the Breit interaction on the alignment for the capture to the doubly-excited state 1s2s22p3/2J = 1 are dramatic, resulting in the remarkable change in the angular distribution and polarization properties of the X-ray emission.