Population of vibrational levels of carbon dioxide by cylindrical fast ionization wave

Dmitry Levko, Michael Pachuilo, Laxminarayan L. Raja

Research output: Contribution to journalArticlepeer-review

Abstract

The population of vibrational levels of carbon dioxide (CO2) by a cylindrical fast ionization wave is analyzed using a one-dimensional Particle-in-Cell Monte Carlo collisions model. The model takes into account the inelastic electron-neutral collisions as well as the super-elastic collisions between electrons and excited species. We observe an efficient population of only the first two levels of the symmetric and asymmetric vibrational modes of CO2 by means of a fast ionization wave. The excitation of other higher vibrational modes by the fast ionization wave is inefficient. Additionally, we observe a strong influence of the secondary electron emission on the population of vibrational states of CO2. This effect is associated with the kinetics of high energy electrons generated in the cathode sheath.
Original languageEnglish (US)
Pages (from-to)093513
JournalPhysics of Plasmas
Volume24
Issue number9
DOIs
StatePublished - Sep 8 2017
Externally publishedYes

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