Analysis of Ion Charge States in Solar Wind and CMEs

Journal of astrophysics and astronomy

J. M. Laming¹  Arati Dasgupta1¹ 

[1] Naval Research Laboratory, Washington DC 20375, USA.$$

关键词: Solar wind and CMEs—Fe ion charge states—dielectronic recombination.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

We discuss needs in dielectronic recombination data motivated by recent work directed at a quantitative understanding of ion charge states of various elements observed in situ in the solar wind and CMEs. The competing processes of ionization and recombination lead to departures from collision ionization equilibrium. The use of this as a diagnostic of acceleration and heating processes of the solar wind and CMEs is sensitive to the accuracy of the atomic rates in a way that steady state ionization equilibrium plasmas are not. The most pressing need is dielectronic recombination rates for ions Fe8+-12+. These are among the dominant species observed in various regions of the solar wind and CMEs, and in remotely sensed EUV spectra.

【 授权许可】

Unknown