Role of charge exchange in the interaction of cold neutral gas and hot plasmaстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июля 2013 г.
Аннотация:Physical importance of the charge-exchange process in the interaction of the cold neutral cloud with surrounding hot fully ionized plasma is investigated. A non-stationary one-dimensional two-component model is presented. It is assumed in the model that the cloud consists of atomic hydrogen. Plasma is assumed to be quasi-neutral and magnetic fields are ignored. We demonstrate distribution of gas-dynamic parameters for plasma and neutral components in the interaction region and investigate time evolution of the interaction inter-face from the beinning of the interaction between neutral gas and plasma to very large time-intervals. Charge-exchange of atoms with heavy ions is a possible source of the X-ray emission. The charge-exchange rate as function of distance and time is shown. This rate being scaled with the relative abundances of minor heavy ions and with corresponding ion-atom cross-sections can be used to estimate X-ray emissivity for different astrophysical objects.