Plasma characteristics of Ag : Al alloy produced by fundamental and second harmonic frequencies of Nd : YAG laser

Abstract EN

In this work, the spectra for plasma glow produced by pulse Nd:YAG laser (λ=532 and 1064nm) on Ag:Al alloy with same molar ratio samples in distilled water were analyzed by studying the atomic lines compared with aluminum and silver strong standard lines.

The effect of laser energies of the range 300 to 800 mJ on spectral lines, produced by laser ablation, were investigated using optical spectroscopy.

The electron temperature was found to be increased from 1.698 to 1.899 eV, while the electron density decreased from 2.247×1015 to 5.08×1014 cm-3 with increasing laser energy from 300 to 800 mJ with wavelength of 1064 nm.

The values of electron temperature using second harmonic frequency are greater than of 1064 nm, which increased from 2.405 to 2.444 eV, while the electron density decreased from 2.210×1015 to 1.516×1015 cm-3 with increasing laser energy for the same energy range.