Nonequilibrium and effect of gas mixtures in an atmospheric microplasma

TL;DR

This study investigates the nonequilibrium properties of atmospheric microplasma, analyzing how gas mixtures and size reduction influence electron and gas temperatures using optical emission spectroscopy.

Contribution

It provides new insights into how gas mixtures and microplasma size affect nonequilibrium characteristics and temperature disparities.

Findings

Microplasma exhibits nonequilibrium behavior.

Reducing size increases temperature disparity.

Gas mixtures significantly influence plasma state.

Abstract

The gas and effective electron temperatures have been estimated for atmospheric microplasma by means of optical emission spectroscopy. The results have shown that the microplasma exhibits nonequilibrium and, as its size is reduced, the two temperatures depart from each other, enhancing the nonequilibrium characteristic. The effect of methane and oxygen concentrations has also been studied, showing that gas mixtures have an important effect on the microplasma state.