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Title: Attenuation of microwaves propagating through parallel-plate helium glow discharge at atmospheric pressure

Abstract

The experimental study of microwave-plasma interaction has been performed to demonstrate the transmission and attenuation of microwaves in atmospheric pressure glow discharge plasma. The cold-collisional plasma produced at atmospheric pressure can absorb the microwave energy because of its complex dielectric constant. The microwave of 10 GHz frequency was launched into the plasma and attenuation was measured as a function of electron plasma density, plasma thickness, electron-neutral collision frequency, etc. It was observed that the attenuation significantly depends on electron plasma density and thickness. The microwave attenuation measurement was also used as a diagnostic to estimate electron plasma density. It was validated by optical emission spectroscopic measurements with helium line intensity ratio method. Both the methods show good agreement.

Authors:
; ; ;  [1]
  1. Institute for Plasma Research, Bhat, Near Indira Bridge, Gandhinagar, Gujarat 382428 (India)
Publication Date:
OSTI Identifier:
21064531
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 103; Journal Issue: 3; Other Information: DOI: 10.1063/1.2838199; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ATMOSPHERIC PRESSURE; ATTENUATION; COLLISIONAL PLASMA; ELECTRONS; GHZ RANGE 01-100; GLOW DISCHARGES; HELIUM; MICROWAVE RADIATION; PERMITTIVITY; PLASMA DENSITY; PLASMA DIAGNOSTICS; THICKNESS

Citation Formats

Srivastava, A K, Prasad, G, Atrey, P K, and Kumar, Vinay. Attenuation of microwaves propagating through parallel-plate helium glow discharge at atmospheric pressure. United States: N. p., 2008. Web. doi:10.1063/1.2838199.
Srivastava, A K, Prasad, G, Atrey, P K, & Kumar, Vinay. Attenuation of microwaves propagating through parallel-plate helium glow discharge at atmospheric pressure. United States. https://doi.org/10.1063/1.2838199
Srivastava, A K, Prasad, G, Atrey, P K, and Kumar, Vinay. 2008. "Attenuation of microwaves propagating through parallel-plate helium glow discharge at atmospheric pressure". United States. https://doi.org/10.1063/1.2838199.
@article{osti_21064531,
title = {Attenuation of microwaves propagating through parallel-plate helium glow discharge at atmospheric pressure},
author = {Srivastava, A K and Prasad, G and Atrey, P K and Kumar, Vinay},
abstractNote = {The experimental study of microwave-plasma interaction has been performed to demonstrate the transmission and attenuation of microwaves in atmospheric pressure glow discharge plasma. The cold-collisional plasma produced at atmospheric pressure can absorb the microwave energy because of its complex dielectric constant. The microwave of 10 GHz frequency was launched into the plasma and attenuation was measured as a function of electron plasma density, plasma thickness, electron-neutral collision frequency, etc. It was observed that the attenuation significantly depends on electron plasma density and thickness. The microwave attenuation measurement was also used as a diagnostic to estimate electron plasma density. It was validated by optical emission spectroscopic measurements with helium line intensity ratio method. Both the methods show good agreement.},
doi = {10.1063/1.2838199},
url = {https://www.osti.gov/biblio/21064531}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 3,
volume = 103,
place = {United States},
year = {Fri Feb 01 00:00:00 EST 2008},
month = {Fri Feb 01 00:00:00 EST 2008}
}