Evolution and Characterization of Arc Plasma Under Atmospheric Pressure

Vijay Kumar Jha; Lekha Nath Mishra; Bijoyendra Narayan

Vijay Kumar Jha Central Department of Physics, Kirtipur (Tribhuvan University, Kathmandu), Nepal
Lekha Nath Mishra Patan Multiple Campus, Patandhoka, Lalitpur (Tribhuvan University, Kathmandu), Nepal
Bijoyendra Narayan J. L. College, Hajipur, Vaishali (BRA Bihar University, Muzaffarpur), India

Keywords: evolution, Arc plasma, langmuir probe, silica, seeding

Abstract

This work elucidates the evolution of Arc plasma and its characterization in terms of different plasma parameters under atmospheric pressure. The I-V traits of Langmuir probes are plotted from the experiment for a single probe approach in Arc plasma. It is discovered that the silica seed alters the electron temperature of the plasma substantially, while the temperature of the gas in the surrounding remains nearly unchanged. The single probe traits were applied to find the electron temperature, floating potential, Debye length and electron density. It is perceived that electron density increases substantially, while electron temperature is reduced after seeding the Arc plasma. A large fall in electron temperature an unusual growth in electron density which is discovered after mixing the plasma with silica aggregate in comparison to those before mixing. The effect of discharge voltage on plasma frequency and Debye length is also mentioned.