激光诱导击穿光谱发射特征中激光诱导坑深度的影响。

Effect of laser-induced crater depth in laser-induced breakdown spectroscopy emission features.

作者信息

Corsi Michela, Cristoforetti Gabriele, Hidalgo Montserrat, Iriarte Daniela, Legnaioli Stefano, Palleschi Vincenzo, Salvetti Azenio, Tognoni Elisabetta

机构信息

Applied Laser Spectroscopy Laboratory, Institute for Chemical-Physical Processes of CNR, Via G. Moruzzi 1, 56124 Pisa, Italy.

出版信息

Appl Spectrosc. 2005 Jul;59(7):853-60. doi: 10.1366/0003702054411607.

DOI:10.1366/0003702054411607

PMID:16053554

Abstract

The influence of crater depth on plasma properties and laser-induced breakdown spectroscopy (LIBS) emission has been evaluated. Laser-induced plasmas were generated at the surface and at the bottom of different craters in a copper sample. Plasmas produced at the sample surface and at the bottom of the craters were spatially and temporally resolved. LIBS emission, temperature, and electronic number density of the plasmas were evaluated. It is shown that the confinement effect produced by the craters enhances the LIBS signal from the laser-induced plasmas.

摘要

评估了坑深对等离子体特性和激光诱导击穿光谱（LIBS）发射的影响。在铜样品中不同坑的表面和底部产生激光诱导等离子体。对样品表面和坑底部产生的等离子体进行了空间和时间分辨。评估了等离子体的LIBS发射、温度和电子数密度。结果表明，坑产生的约束效应增强了激光诱导等离子体的LIBS信号。