Measurement of plasma parameters in bright and dark dot honeycomb pattern

doi:10.3969/j.issn.1000-1565.2016.01.004

Abstract

Abstract: The bright and dark dot honeycomb pattern composed of center spot,vertex and spot of the line can be observed in a dielectric barrier discharge(DBD)device filled with air or its mixture with argon.The brightness of the three sets of structures is different.It indicates that the parameters and the states of the plasma may be different.The molecular vibrational temperatures and the rotational temperatures of the three sets of structures are measured by using optical emission spectra under different argon concentration.The results show that the sequence of the molecular vibrational temperatures from the highest to the lowest is the spot of the line,the vertex,the center spot.The rotational temperatures of them remain constant.The vibrational temperatures of the three sets of structures decrease with the rising of the argon concentration while the rotational temperature changes little.

Key words: dielectric barrier discharge, bright and dark dot honeycomb pattern, molecular vibrational temperature, rotational temperature

CLC Number:

O461.2

WANG Qian,ZHANG Hao,DONG Lifang,FENG Jianyu,WEI Lingyan. Measurement of plasma parameters in bright and dark dot honeycomb pattern[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(1): 17-20.

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