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RADIAL DISTRIBUTION OF THE ATOM AND ION DENSITIES IN THE COPPER VAPOUR LASER DISCHARGE
A. P. Pachkawade

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 5, Issue-1, pp.1-5, Jan 2018
DPI :-> 16.10046.IJCESR.2018.V5I1.15.2304



Abstract
There is a large radial variation in the discharge parameters which dictate the laser output power and therefore the investigation of the radial distribution of the densities and the spectral emission in the discharge gives large amount of information [1-3] than any other type of experimental technique of procuring data related to the operation of the laser. In the present work we have divided the study of the radial profiles into two categories. The first category consists of evaluating radial profiles of the discharge parameters like electron density, electron temperature, copper atom densities, copper ion densities, etc. and the second category consists of evaluating radial profiles of spectral emission of the discharge from the knowledge of electron temperature and the electron or ion densities. In fact, the electron temperature is the fundamental parameter, which is determined by the cooling of the plasma electrons by the walls and the heating of the electrons due to the discharge current. The radial profile of the electron temperature in the discharge is assumed to be given by the equation. T(R) = T0 [1-(R/R0)2 ] (1) Where,T0 - Axial temperature in eV, R – Radial distance at the point in the tube and R0 – Radius of the discharge tube. The radial profile of the electron density in the gaseous laser discharge tube is also assumed to have similar shape. Initially, from the profiles of the electron temperature, the radial profile of the densities are obtained. In the second category of the radial profiles, we obtain the radial profiles of the spectral emission of the discharge from the knowledge of the electron temperature, electron and ion densities. Furthermore, we have also computed the radial distribution of the fractional density of the copper atoms at different electron temperatures on the axis of discharge tube

Key-Words / Index Term
Copper Vapour Laser, laser radiation, inversion density, dimensions of the laser plasma.

How to cite this article
A. P. Pachkawade , “RADIAL DISTRIBUTION OF THE ATOM AND ION DENSITIES IN THE COPPER VAPOUR LASER DISCHARGE”, International Journal of Current Engineering And Scientific Research ( IJCESR), 5, Issue-1, pp.1-5, Jan 2018. DPI:16.10046.IJCESR.V5.I1.2304