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Vibrational kinetics of electronically-excited N2(A3Sig, v) molecules in nitrogen discharge plasmaстатья
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: 3 октября 2019 г.
- Автор: Popov N.A.
- Журнал: Journal of Physics D - Applied Physics
- Том: 46
- Год издания: 2013
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 355204
- Последняя страница: 10
- DOI: 10.1088/0022-3727/46/35/355204
- Аннотация: A model on formation of the vibrational distribution function of metastable electronically excited N2A3S,v) states in nitrogen discharge plasma is presented. By means of comparison with the experimental data the rate constants for the reaction N2(A3S,v) + N2(X) → N2(A3S,v − 2) + N2(X) have been clarified. It is assumed that the probability of population of N2(A3S,v) states by collisional deactivation of N2(B3Пg,v) molecules is proportional to the Franck–Condon factors of correspondent N2(B3Пg,v)→ N2(A3S,v) transitions, i.e. that the quenching is essentially vertical. The results of calculations carried out under this assumption are in agreement with measured N2(A3S,v)vibrational distribution at the end of pulsed high current discharge in nitrogen. Study of a variation of the population of vibrational level N2(A3S,v = 0) in the afterglow of streamer discharge in nitrogen at atmospheric pressure has been performed. It is shown that the dynamics of N2(A3S,v = 0) number density depends essentially not only on their loss in the pooling reaction N2(A3S,v) + N2(A3S,v)→ product, but also on additional population due to the quenching of high vibrational levels. The fraction of dissociation channel in the process of N2(A3S,v) deactivation by oxygen molecules have been calculated. It is shown that temporal evolution of the fraction of the dissociation channel is first of all associated with a variation of the relative population of the vibrational level N2(A3S,v = 0). In air discharge plasma at high pressure, the population of N2(A3S,v = 0) state is relatively low, so the fraction of the dissociation channel in the deactivation of all electronically excited states of nitrogen by oxygen exceeds 90–95%.
- Добавил в систему: Попов Николай Александрович