TY - JOUR KW - Surfaces KW - Temperature KW - Surface KW - Pulse KW - Ablation KW - Laser KW - Laser ablation KW - Laser ablation KW - Spectroscopy KW - Breakdown KW - Laser-induced breakdown spectroscopy KW - Analysis KW - Laser-induced breakdown KW - Laser-induced breakdown spectroscopy KW - Paper KW - Plasma KW - Chemical analysis KW - Chemical analysis KW - Laser pulses KW - Pulses KW - Ratio KW - Structure KW - Development KW - High temperature KW - Density KW - Electron KW - Spectra KW - Spectrum KW - Laser-induced plasma KW - Laser-induced plasma KW - Electron density KW - Cavity aspect ratio KW - Cavity structure KW - Electron-density KW - High-temperature KW - Libs KW - Quantitative chemical analysis AU - Samuel S Mao AU - Xianzhong Zeng AU - Xianglei Mao AU - Richard E Russo AB -

Cavity formation is a common phenomenon involved in solid-state analysis when repetitive laser pulses are applied to induce breakdown spectra. While previous LIBS investigations have been mostly focused on laser ablation on flat surfaces, the development of a laser-induced plasma inside cavity structures is of both fundamental and practical significance for quantitative chemical analysis using LIBS. In this paper, we attempt to answer the question, to what extent cavity formation would influence the temperature and electron density of laser-induced plasma. We found a significant effect of cavity aspect ratio on plasma characteristics, in particular, the measured high temperature and electron density of laser-induced plasma inside cavity structures.

AN - 157 BT - J.Anal.Atom.Spectrom. C2 - LBNL-56016 LA - eng LB - Laser N1 -

LBNL-56016 IN FILE

N2 -

Cavity formation is a common phenomenon involved in solid-state analysis when repetitive laser pulses are applied to induce breakdown spectra. While previous LIBS investigations have been mostly focused on laser ablation on flat surfaces, the development of a laser-induced plasma inside cavity structures is of both fundamental and practical significance for quantitative chemical analysis using LIBS. In this paper, we attempt to answer the question, to what extent cavity formation would influence the temperature and electron density of laser-induced plasma. We found a significant effect of cavity aspect ratio on plasma characteristics, in particular, the measured high temperature and electron density of laser-induced plasma inside cavity structures.

PY - 2004 SP - 495 EP - 498 T2 - J.Anal.Atom.Spectrom. TI - Laser-induced breakdown spectroscopy: flat surface vs. cavity structures VL - 19 ER -