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Kelvin–Helmholtz instability of velocity tangential discontinuity in partly ionized plasma with charge exchangeстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 14 января 2019 г.
- Автор: Chalov S.V.
- Журнал: Monthly Notices of the Royal Astronomical Society
- Том: 482
- Год издания: 2019
- Издательство: Oxford Journals, Oxford University Press
- Местоположение издательства: Oxford, UK, England
- Первая страница: 1664
- Последняя страница: 1669
- DOI: 10.1093/mnras/sty2750
- Аннотация: The linear instability of a tangential velocity discontinuity in a partially ionized hydrogen plasma is studied. Atomic gas is collisionless and interacts with protons through resonant charge exchange. At one side of the discontinuity hydrogen atoms are in dynamic and thermodynamic equilibrium with the plasma. In the plasma at other side the charge-exchange cross-section is assumed to be zero. This last assumption can be approximately true for a very hot plasma. The dispersion equation is obtained and its solutions are investigated in the short-wave approximation. It is shown that in addition to the Kelvin–Helmholtz instability, the charge-exchange process leads to the appearance of new unstable modes that are neutral or absent without the charge exchange. In contrast to the Kelvin–Helmholtz instability, the increments of the new unstable modes do not depend explicitly on the relative velocity of two plasmas.
- Добавил в систему: Чалов Сергей Владимирович
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