Ionization nonequilibrium induced by neutral chemistry in air plasmas

AIAA Journal ◽  
1996 ◽  
Vol 34 (8) ◽  
pp. 1745-1747 ◽  
Author(s):  
Christophe O. Laux ◽  
Richard J. Gessman ◽  
Charles H. Kruger
Keyword(s):  
Air Plasmas ◽  
Ionization Nonequilibrium

Boltzmann and Master Equations for MHD in Weakly Ionized Air Plasmas

2008 ◽  
Author(s):  
Gianpiero Colonna ◽  
mario Capitelli ◽  
Lucia Daniela Pietanza ◽  
Annarita Casavola
Keyword(s):  
Master Equations ◽  
Air Plasmas ◽  
Weakly Ionized ◽  
Ionized Air

Asymptotic solutions for a symmetric plasma under ionization nonequilibrium

1999 ◽  
Vol 86 (9) ◽  
pp. 4792-4798 ◽  
Author(s):  
Lindsey D. Thornhill ◽  
Prateen V. Desai
Keyword(s):  
Asymptotic Solutions ◽  
Ionization Nonequilibrium

scholarly journals A simplified method for calculating spectral emission of nonequilibrium air plasmas in hypersonic shock-layers

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Xin He ◽  
Cheng Gao ◽  
Tao Jiang
Keyword(s):  
Energy Level ◽  
Electronic Energy ◽  
Air Plasma ◽  
Spectral Emission ◽  
Radiative Processes ◽  
Air Plasmas ◽  
Significant Difference ◽  
Simplified Method ◽  
Electronic Energy Level ◽  
Hypersonic Shock

AbstractA simplified method for calculating the spectral emission of nonequilibrium air plasmas is developed. In order to obtain the nonequilibrium energy level populations, the nonequilibrium coefficients are introduced into the Saha-Boltzmann equation. These nonequilibrium coefficients are calculated by using several significant radiative processes. An approach to the determination of nonequilibrium electronic energy level populations of diatomic molecules is also presented. Based on the method, spectral emission of atoms and molecules in a typical air plasma cell is investigated. The results reveal that there is a significant difference between the nonequilibrium and equilibrium emission. We apply the method to the nonequilibrium AVCO R-156 experiment. Good agreement with the NEQAIR code and the measured data is shown, indicating that the method is reasonable and has good accuracy.

Emission and absorption coefficients of diatomic gases in air plasmas produced by Earth entry

2021 ◽  
Vol 130 (6) ◽  
pp. 063303
Author(s):  
Rihui Liang ◽  
Yanming Liu ◽  
Fangyan Li
Keyword(s):  
Absorption Coefficients ◽  
Air Plasmas

REMC computer simulations of the thermodynamic properties of argon and air plasmas

2002 ◽  
Vol 100 (15) ◽  
pp. 2487-2497 ◽  
Author(s):  
MARTIN LÍSAL ◽  
WILLIAM R. SMITH ◽  
MICHAL BUREŠ ◽  
VÁCLAV VACEK ◽  
JIŘÍ NAVRÁTIL
Keyword(s):  
Thermodynamic Properties ◽  
Computer Simulations ◽  
Air Plasmas

scholarly journals Simple, compact source for low-temperature air plasmas

2002 ◽  
Vol 73 (8) ◽  
pp. 3128-3130
Author(s):  
D. P. Sheehan ◽  
J. Lawson ◽  
M. Sosa ◽  
R. A. Long
Keyword(s):  
Low Temperature ◽  
Compact Source ◽  
Air Plasmas

Surface Treatment of the Glass Fibers in Low Pressure Microvave Plasma

1983 ◽  
Vol 30 ◽  
Author(s):  
Ryszard Parosa
Keyword(s):  
Microwave Power ◽  
Industrial Application ◽  
Treatment Time ◽  
Plasma Reactor ◽  
Glass Fibers ◽  
Process Conditions ◽  
Plasma Region ◽  
Optimal Process ◽  
Driving System ◽  
Air Plasmas

ABSTRACTIn the method described here, oxygen and air plasmas were generated at pressure of 1 – 10 Torr in quartz tube placed inside various kinds of microwave cavieties. Cavieties were supplied by 10 to 500 W of microwave power / f=2.45 GHz /. Processed fiber was fastly moved across the plasma region by special driving system. Experimentally the optimal process conditions, i.e. treatment time and gas pressure, were found. Moreover, a special construction of a “long” plasma reactor for industrial application of the process was worked out.

Sign in / Sign up

Export Citation Format

Share Document