Document Type

Article

Publication Date

2021

DOI

10.1088/1361-6595/ac43c6

Publication Title

Plasma Sources Science and Technology

Pages

1-13

Abstract

The fluid models are frequently used to describe a non-thermal plasma such as a streamer discharge. The required electron transport data and rate coefficients for the fluid model are parametrized using the local field approximation (LFA) in first order models and the local-mean-energy approximation (LMEA) in second order models. We performed Monte Carlo simulations in Nitrogen gas with step changes in the E/N (reduced electric field) to study the behavior of the transport properties in the transient phase. During the transient phase of the simulation, we extract the instantaneous electron mean energy, which is different from the steady state mean electron energy, and the corresponding transport parameters and rate coefficients. Our results indicate that the mean electron energy is not a suitable parameter for mobility/drift of electrons due to big difference in momentum relaxation and energy relaxation. However, the high energy threshold rates such as ionization show a strong correlation to mean electron energy. In second order models where the energy-balance equation is solved, we suggest that it would rather be appropriate to use the local electric field to find electron drift velocity in gases such as Nitrogen and the local mean electron energy to determine the ionization and excitation rates.

Comments

© Copyright 2022 IOP Publishing

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Although reasonable endeavours have been taken to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record on IOPscience once published for full citation and copyright details, as permission may be required. All third party content is fully copyright protected, unless specifically stated otherwise in the figure caption of the Version of Record."

Version of Record:

Dhali, S. K. (2022). Transient behavior of drift and ionization in atmospheric pressure nitrogen discharge. Plasma Sources Science and Technology, 31(2), Article 025014. https://doi.org/10.1088/1361-6595/ac43c6

Original Publication Citation

Dhali, S. K. (2021). Transient behavior of drift and ionization in atmospheric pressure nitrogen discharge. Plasma Sources Science and Technology, 1-13. https://doi.org/10.1088/1361-6595/ac43c6

ORCID

0000-0002-7886-3987 (Dhali)

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