Dynamics of N^(5+)-H electron capture in Debye plasmas  

作　　者：L.Liu J.G.Wang 

机构地区：[1]Data Center for High Energy Density Physics,Institute of Applied Physics and Computational Mathematics,P.O.Box 8009-26,Beijing,100088,People's Republic of China

出　　处：《Matter and Radiation at Extremes》2016年第2期114-122,共9页极端条件下的物质与辐射（英文）

基　　金：supported by the National Basic Research Program of China(Grant No.2013CB922200);by the National Natural Science Foundation of China(Grant Nos.11204017,11474033 and 11474032);by the foundation for the development of Science and Technology of China Academy of Engineering Physics(Grant No.2013A0102005).

摘　　要：The electron capture in N^(5+)-H collisions imbedded in a Debye plasma is studied by using the two-center atomic orbital close-coupling method in the energy range from 1 keV/u to 200 keV/u.The atomic orbitals and electron binding energies of atomic states are calculated within the Debye-Huckel approximation of the screened Coulomb potential and used in atomic orbital close-coupling dynamics formalism to calculate the electron capture cross sections.The electron capture cross sections and the charge transfer spectral lines of N^(4+)(1s^(2)nl)for a number of representative screening parameter values are presented and discussed.It is found that the screening of Coulomb interactions affects the entire collision dynamics and the magnitude and energy behavior of state-selective cross sections.The changes in electron binding energies and capture cross sections when the interaction screening varies introduce dramatic changes in the radiation spectrum of N^(4+)(1s^(2)nl)capture states with respect to the unscreened interaction case.

关 键 词：Electron capture Debye plasma SCREENING Atomic orbital close-coupling 

分 类 号：O57[理学—粒子物理与原子核物理]