Recombination and Decay of Plasma Produced by Washer Stacked Plasma Gun inside a Curved Vacuum Chamber

Abstract

This paper presents the recombination coefficient of the plasma blob is calculated by measuring the electron density ne of the order of 1018m-3 and time (~μs) to move a particular distance.A washer stacked plasma gun is designed to produce high density plasma blob which is moving with speed~104 m/s. As the blob moves radially outward the particle density as well as drift velocity of the blob decreases. Since both charged and neutral components are present in the blob, the recombination may play a dominant role for the blob motion. It has been observed that the recombination co-efficient α (~ 10 -12 m3 s-1) is almost constant across radial distance from gun mouth and in that spatial length the electron-excited molecular collisional ionization is negligible, so two body recombination is dominant.