Polarization of the strongest nf→3d (n = 4, 5, 6) radiative lines emitted from tungsten ions following EIE and DR processes

28th International Conference on Photonic, Electronic and Atomic Collisions

Ma, X.Y.^1,2 ; Wu, Z.W.^1,2 ; Dong, C.Z.^1,2 ; Shi, Y.L.^1,2 ; Xie, L.Y.^1,2

Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou

730070, China^1

Joint Laboratory of Atomic and Molecular Physics, Northwest Normal University, Institute of Modern Physics of Chinese Academy of Sciences, Lanzhou

730070, China^2

关键词: Distorted wave methods;    Electron-capture cross sections;    Electron-impact excitation;    Formation mechanism;    Linear polarization;    Magnetic sublevels;    Ni-like;    Tungsten ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/6/062021/pdf
DOI  :  10.1088/1742-6596/488/6/062021

来源: IOP

【 摘 要 】

Electron-impact excitation and resonant electron capture cross sections to the specific magnetic sublevels of highly charged Ni-like to Ge-like tungsten ions have been calculated systematically by using a fully relativistic distorted-wave method. And these magnetic cross sections have further been employed to obtain the degrees of linear polarization of the corresponding strongest nf → 3d (n = 4, 5, 6) x-rays. We compare polarizations of the same lines but from the above two different processes for the first time. It has been found the polarizations following both the both processes are totally different. It is expected that the obvious differences between the polarizations can be used to distinguish the formation mechanism of the corresponding lines.