Formation of N2(A3Σ+u , v = 0–3)metastable species in decaying nitrogen streamer

0398386 - ÚFP 2014 RIV GB eng J - Článek v odborném periodiku
Šimek, Milan - Ambrico, P. F. - Prukner, Václav
Formation of N2(A3Σ+u , v = 0–3)metastable species in decaying nitrogen streamer.
Journal of Physics D-Applied Physics. Roč. 46, č. 48 (2013), s. 485205-485205. ISSN 0022-3727. E-ISSN 1361-6463
Grant CEP: GA ČR(CZ) GAP205/12/1709
Institucionální podpora: RVO:61389021
Klíčová slova: nitrogen metastable * streamer * optical diagnostics * laser-induced fluorescence * LIF
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 2.521, rok: 2013
http://iopscience.iop.org/0022-3727/46/48/485205/pdf/0022-3727_46_48_485205.pdf

Evolution of , v = 0−3) metastable species produced by triggered single filamentary streamer discharge was investigated utilizing emission spectrometry and laser-induced fluorescence techniques.Triggered streamers were produced repeatedly in point-to-plane DBD electrode geometry in pure nitrogen at 200 Torr and metastable species were monitored in the centre of the discharge gap.Populations of all four monitored vibronic levels increase during streamer channel decay phase, reaching local maximum in a microsecond timescale and decreasing afterwards. Maximum population of an individual , v) vibronic level occurs with a certain delay after streamer onset τd(v), which decreases with increasing vibrational number.The longest delay τd = 5 ± 0.5 µs was fixed for the lowest metastable level v = 0, whereas τd values of 4.4 ± 0.5, 1.75 ± 0.25 and 0.85 ± 0.25 µs were fixed for v = 1, 2 and 3,respectively. Coupled evolution of the two lowest v = 0, 1)levels was monitored independently by
Trvalý link: http://hdl.handle.net/11104/0225854