Spectroscopic Diagnosis of Plasmas Produced by Laser Irradiation of CdO and CdO:Cu Targets

Abstract

This work aims to evaluate the effect of Nd:YAG laser beam energy on the properties of plasma that is formed by directing the laser beam on a solid target (pure cadmium oxide and copper-doped cadmium oxide) in air under influence of atmospheric pressure. Plasma is formed throughout the use of laser pulses with different energies (500, 600, and 700mJ). The emitted light is collected using a fiber cable and illuminates the entry hole of the scaled spectrometer equipped with a charged-coupled device (CCD) camera coupled with an intense charge of photoionization at multiple delay times. Electron density, electron temperature, and Debye wavelength are calculated according to Boltzmann equations.