Atomic Hydrogen and Molecular Carbon Emissions in Laser-Induced Breakdown Spectroscopy

Atomic Hydrogen and Molecular Carbon Emissions in Laser-Induced Breakdown Spectroscopy

This article addresses hydrogen Balmer series measurements following laser-induced optical breakdown. Electron density on the order of 1 × 10 m−3 can be inferred using Hα Stark width and shift for plasma generated in 1 to 1.3 × 10 Pa, gaseous hydrogen. The Hβ line can be utilized for electron density up to 7 × 10 m−3. Laser ablation of aluminium reveals limits of application of the Balmer serie...

Hydrogen Balmer Series Spectroscopy in Laser-induced Breakdown Plasmas

A review is presented of recent experiments and diagnostics based on Stark broadening of hydrogen Balmer lines in laser-induced optical breakdown plasmas. Experiments primarily utilize pulsed Nd:YAG laser radiation at 1064-nm and nominal 10 nanosecond pulse duration. Analysis of Stark broadening and shifts in the measured H-alpha spectra, combined with Boltzmann plots from H-alpha, H-beta and H...

Laser-Induced Breakdown Spectroscopy

Laser Induced Breakdown Spectroscopy

Laser-induced breakdown spectroscopy (LIBS) is a powerful analytical technique that can be used for the detection and characterization of materials. In LIBS, a focused laser beam is used to generate a plasma plume on the surface of solid and liquid samples or inside the sample volume of gases, liquids, and aerosols. Each excited atom in the plasma emits a unique set of spectral lines, particula...

Laser Induced Breakdown Spectroscopy

Esta revisão descreve os aspectos fundamentais, a instrumentação, as aplicações e tendências futuras de uma técnica analítica que se encontra em seu estágio de consolidação e que está em vias de estabelecer o seu nicho entre as técnicas espectrofotométricas modernas. A técnica é denominada Espectroscopia de Emissão em Plasma Induzido por Laser (em inglês, Laser Induced Breakdown Spectroscopy, L...