A small electron beam ion trap/source facility for electron/neutral-ion collisional spectroscopy in astrophysical plasmas  

作　　者：Gui-Yun Liang Hui-Gang Wei Da-Wei Yuan Fei-Lu Wang Ji-Min Peng Jia-Yong Zhong Xiao-Long Zhu Mike Schmidt Günter Zschornack Xin-Wen Ma Gang Zhao 

机构地区：[1]Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Department of Astronomy, Beijing Normal University, Beijing 100875, China [3]Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China [4]DREEBIT GmbH, 01109 Dresden, Germany

出　　处：《Research in Astronomy and Astrophysics》2018年第1期1-10,共10页天文和天体物理学研究（英文版）

基　　金：supported by the National Key R&D Program of China(No.2017YFA0402401);the National Natural Science Foundation of China(Grant No.11522326);the National Basic Research Program of China(973 Program,Grant 2013CBA01503);support by the Science Challenge Project(No.TZ2016005)

摘　　要：Spectra are fundamental observation data used for astronomical research,but understanding them strongly depends on theoretical models with many fundamental parameters from theoretical calculations.Different models give different insights for understanding a specific object.Hence,laboratory benchmarks for these theoretical models become necessary.An electron beam ion trap is an ideal facility for spectroscopic benchmarks due to its similar conditions of electron density and temperature compared to astrophysical plasmas in stellar coronae,supernova remnants and so on.In this paper,we will describe the performance of a small electron beam ion trap/source facility installed at National Astronomical Observatories,Chinese Academy of Sciences.We present some preliminary experimental results on X-ray emission,ion production,the ionization process of trapped ions as well as the effects of charge exchange on the ionization.Spectra are fundamental observation data used for astronomical research,but understanding them strongly depends on theoretical models with many fundamental parameters from theoretical calculations.Different models give different insights for understanding a specific object.Hence,laboratory benchmarks for these theoretical models become necessary.An electron beam ion trap is an ideal facility for spectroscopic benchmarks due to its similar conditions of electron density and temperature compared to astrophysical plasmas in stellar coronae,supernova remnants and so on.In this paper,we will describe the performance of a small electron beam ion trap/source facility installed at National Astronomical Observatories,Chinese Academy of Sciences.We present some preliminary experimental results on X-ray emission,ion production,the ionization process of trapped ions as well as the effects of charge exchange on the ionization.

关 键 词：X-ray：general atomic processes line：formation method：laboratory：atomic 

分 类 号：P142.83[天文地球—天体物理]