Influence of the Gaseous Medium on the Spectral Emission of Microplasma Obtained in Evaporating a Sample with the Aid of Laser Radiation

Abstract

An investigation is made of the influence of air, oxigen, argon, and neon-helium atmosphere on the spatial distribution of the glow of microplasma, obtained in treating a brass sample with laser radiation and excited with the aid of a subsidiary synchronous discharge. The plasma's luminous zone, from which the spectral lines are recorded, extends when the inductance of the discharge circuit is lower and when an inert gaseous medium is used. The maxima of the intensities of the spectral lines with higher excitation energies appear at greater heights from the sample's surface.

Key Words:

• Laser raicrospectral analysis
• controlled atmosphere