Low Temperature Physics: 45, 732 (2019); https://doi.org/10.1063/1.5111300
Fizika Nizkikh Temperatur: Volume 45, Number 7 (July 2019), p. 856-861    ( to contents , go back )

Luminescence of molecular nitrogen in cryogenic plasmas

R.E. Boltnev1,2,3, I.B. Bykhalo1, V.V. Khmelenko4, I.N. Krushinskaya1, D.M. Lee4, P.T. McColgan4, S. Sheludiakov4, and A.A. Pelmenev1

1Branch of Talroze Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia

2Joint Institute for High Temperatures, Russian Academy of Sciences, 13/2 Izhorskaya str., Moscow, 125412, Russia

3Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow region, 141701, Russia

4Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
E-mail: boltnev@gmail.com
pos Анотація:

Received December 24, 2018, published online May 28, 2019

Abstract

Great enhancement of molecular nitrogen luminescence in the afterglow of nitrogen-helium gas mixtures was observed at temperatures ≤ 10 K. The effect is explained by the increased efficiency of the recombination of nitrogen atoms and energy transfer from metastable nitrogen molecules and helium atoms to nitrogen molecules in the cold dense helium vapor.

Key words: luminescence, molecular nitrogen, rotational structure, cryogenic plasma.

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