Energy Balance and Gas Thermalization in a High Power Microwave Discharge in 2 2 N-O Mixtures

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Biabani Samaneh; Foroutan Gholamreza

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Paper Information

Journal: International Journal of Optics and Photonics Year:2019 | Volume:13 | Issue:2 Page(s): 155-170

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Title

Energy Balance and Gas Thermalization in a High Power Microwave Discharge in 2 2 N-O Mixtures

Author(s)

Biabani Samaneh | Foroutan Gholamreza | Issue Writer Certificate

Keywords

Microwave discharges

FDTD simulations

Fast gas heating

Gas temperature

Abstract

The dynamics of Fast gas heating in a high power microwave discharge in air, is investigated in the framework of FDTD simulations of the Maxwell equations coupled with the fluid simulations of the plasma. It is shown that, an ultra-Fast gas heating of the order of several 100 Kelvins occurs in less than 100 ns. The main role in the heating is played by the electron impact dissociation of 2 O, dissociation via quenching of metastable states of 2 N, as well as, ( ) 1 O D quenching by nitrogen molecules. Among the electronically excited metastable states, ( ) 2 N B, C, a are the most important species. Slow heating of the gas above 1 μ s is attributed to the vibrational relaxation processes of 2 N, among them vibrationaltranslational relaxation of 2 N demonstrates the highest heating rate. The heating rate and thus the Gas temperature are significantly increased with increasing of the microwave pulse amplitude, pulse width, and the gas pressure. In all cases, enhanced 2 O dissociation is the main factor behind the enhanced gas heating. The same effects are observed for increasing of the initial Gas temperature, and 2 O percentage in a 2 2 N-O mixture.

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APA: Copy

Biabani, Samaneh, & Foroutan, Gholamreza. (2019). Energy Balance and Gas Thermalization in a High Power Microwave Discharge in 2 2 N-O Mixtures. INTERNATIONAL JOURNAL OF OPTICS AND PHOTONICS (IJOP), 13(2), 155-170. SID. https://sid.ir/paper/307274/en

Vancouver: Copy

Biabani Samaneh, Foroutan Gholamreza. Energy Balance and Gas Thermalization in a High Power Microwave Discharge in 2 2 N-O Mixtures. INTERNATIONAL JOURNAL OF OPTICS AND PHOTONICS (IJOP)[Internet]. 2019;13(2):155-170. Available from: https://sid.ir/paper/307274/en

IEEE: Copy

Samaneh Biabani, and Gholamreza Foroutan, “Energy Balance and Gas Thermalization in a High Power Microwave Discharge in 2 2 N-O Mixtures,” INTERNATIONAL JOURNAL OF OPTICS AND PHOTONICS (IJOP), vol. 13, no. 2, pp. 155–170, 2019, [Online]. Available: https://sid.ir/paper/307274/en

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