PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Impacts of air pressure on the evolution of nanosecond pulse discharge products |
Yu Jin-Lu (于锦禄)a, He Li-Ming (何立明)a, Ding Wei (丁未)b, Wang Yu-Qian (王育虔)a, Du Chun (杜纯)a |
a The Engineering Institute, Air Force Engineering University, Xi'an 710038, China; b Department of Training, Air Force Engineering University, Xi'an 710051, China |
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Abstract Based on the nonequilibrium plasma dynamics of air discharge, a dynamic model of zero-dimensional plasma is established by combining the component density equation, the Boltzmann equation, and the energy transfer equation. The evolution properties of nanosecond pulse discharge (NPD) plasma under different air pressures are calculated. The results show that air pressure has a significant impact on the NPD products and on the peak value of particle number density for particles such as O atoms, O3 molecules, N2(A3) molecules in excited states, and NO molecules. It increases at first and then decreases with the increase of air pressure. On the other hand, the peak values of particle number density for N2(B3) and N2(C3) molecules in excited states are only slightly affected by the air pressure.
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Received: 10 April 2012
Revised: 05 September 2012
Accepted manuscript online:
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PACS:
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52.25.Jm
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(Ionization of plasmas)
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52.25.Dg
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(Plasma kinetic equations)
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52.65.-y
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(Plasma simulation)
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34.50.Ez
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(Rotational and vibrational energy transfer)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 51106179 and 51276196). |
Corresponding Authors:
Yu Jin-Lu
E-mail: yujinlu1@163.com
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Cite this article:
Yu Jin-Lu (于锦禄), He Li-Ming (何立明), Ding Wei (丁未), Wang Yu-Qian (王育虔), Du Chun (杜纯) Impacts of air pressure on the evolution of nanosecond pulse discharge products 2013 Chin. Phys. B 22 055201
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