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Long-live plasma and fast quenching of N2(C3П) by electrons in the afterglow of a nanosecond capillary discharge in nitrogenстатья
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: 2 сентября 2016 г.
- Авторы: Lepikhin N.D., Klochko A.V., Popov N.A., Starikovskaia S.M.
- Журнал: Plasma Sources Science and Technology
- Том: 25
- Номер: 4
- Год издания: 2016
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 045003
- Последняя страница: -
- DOI: 10.1088/0963-0252/25/4/045003
- Аннотация: Quenching of electronically excited nitrogen state, N2(C3П,v = 0) in the afterglow of nanosecond capillary discharge in pure nitrogen is studied. It is found experimentally that an additional collisional mechanism appears and dominates at high specific deposited energies leading to the anomalously fast quenching of the N2(C3П) in the afterglow. On the basis of obtained experimental data and of the analysis of possible quenching agents, it is concluded that the anomalously fast deactivation of the N2(C3П) can be explained by quenching by electrons. Long-lived plasma at time scale of hundreds nanoseconds after the end of the pulse is observed. High electron densities, about 10(+14) cm−3 at 27 mbar, are sustained by reactions of associative ionization. Kinetic 1D numerical modeling and comparison of calculated results with experimentally measured electric fields in the second high-voltage pulse 250 ns after the initial pulse, and electron density measurements in the afterglow confirm the validity of the suggested mechanism.
- Добавил в систему: Попов Николай Александрович