Stark–Zeeman line-shape model for multi-electron radiators in hot dense plasmas subjected to large magnetic fields  

作　　者：Sandrine Ferri Olivier Peyrusse Annette Calisti 

机构地区：[1]Aix-Marseille Universit´e,CNRS,PIIM,UMR7345,Marseille,France

出　　处：《Matter and Radiation at Extremes》2022年第1期35-46,共12页极端条件下的物质与辐射（英文）

基　　金：supported by the EUROfusion Enabling Research work programme 2017(Grant No.CfP-AWP17-IFE-CEA-02).

摘　　要：We present a Stark–Zeeman spectral line-shape model and the associated numerical code,PPPB,designed to provide fast and accurate line shapes for arbitrary atomic systems for a large range of plasma conditions.PPPB is based on the coupling of the PPP code-a Stark-broadened spectral line-shape code developed for multi-electron ion spectroscopy in hot dense plasmas-and the MASCB code developed recently to generate B-field-dependent atomic physics.The latter provides energy levels,statistical weights,and reduced matrix elements of multi-electron radiators by diagonalizing the atomic Hamiltonian that includes the well know B-dependent term.These are then used as inputs to PPP working in the standard line-broadening approach,i.e.,using the quasi-static ion and impact electron approximations.The effects of ion dynamics are introduced by means of the frequency fluctuation model,and the physical model of electron broadening is based on the semi-classical impact approximation including the effects of a strong collision term,interference,and cyclotron motion.Finally,to account for polarization effects,the output profiles are calculated for a given angle of observation with respect to the direction of the magnetic field.The potential of this model is presented through Stark–Zeeman spectral line-shape calculations performed for various experimental conditions.

关 键 词：field. ZEEMAN magnetic 

分 类 号：O56[理学—原子与分子物理]