A numerical solution of the Boltzmann equation for high‐powered short pulse microwave breakdown in nitrogen
作者:
M. J. Mulbrandon,
J. Chen,
P. J. Palmadesso,
C. A. Sullivan,
A. W. Ali,
期刊:
Physics of Fluids B: Plasma Physics
(AIP Available online 1989)
卷期:
Volume 1,
issue 12
页码: 2507-2515
ISSN:0899-8221
年代: 1989
DOI:10.1063/1.859186
出版商: AIP
数据来源: AIP
摘要:
A theoretical formulation that provides a basis for generating approximate solutions of the Boltzmann equation for the study of high‐powered microwave pulses interacting with a background atmosphere is given. A numerical scheme is implemented using realistic cross sections for electron–nitrogen collisions, including excitation and ionization. It is found that the numerical results agree well with previous experimental and theoretical values when &agr; is less than about 0.1 kV/cm Torr, where &agr; is the effective electric field divided by the pressure (&agr;=Ee/P). Results are presented providing a simple fit for the time averaged momentum transfer rate and the ionization rate as a function of the microwave electric fieldE, wavelength &lgr;, and gas pressureP, for 0.1≤&agr;≤1.0 kV/cm Torr. This fit is compared with recent experimental data for breakdown times.
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