Light emission and electrical characteristics in the early post-discharge of a high purity nitrogen streamer have been investigated. Up to the millisecond regime, both light emission and current are significant, while the voltage has decayed after several tens of microseconds. The corresponding decay time constants are 240 µs and 580 µs for the current and radiance, respectively, versus 3.8 µs for the voltage decay. This suggests that energy transfer to high vibrational levels of N2 (X 1 Σ, ν) and high population of metastable N2 (A3 Σ+ ) species are important in sustaining the discharge.

Additional Metadata
THEME Energy (theme 4)
Editor P.G.C. Almeida , L.L. Alves , V. Guerra
Conference Europhysics Conference on the Atomic and Molecular Physics of Ionised Gases
Citation
Clevis, T.T.J, Nijdam, S, & Ebert, U. (2012). Slow decay of radiation after a pulsed streamer discharge in pure nitrogen. In P.G.C Almeida, L.L Alves, & V Guerra (Eds.), Proceedings of European Conference on the Atomic and Molecular Physics of Ionised Gases 2012.