Time-resolved plasma properties for double pulsed laser-induced breakdown spectroscopy of silicon

被引：83

作者：

Mao, XL ^{[1
]}

Zeng, XZ ^{[1
]}

Wen, SB ^{[1
]}

Russo, RE ^{[1
]}

机构：

[1] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2005年 / 60卷 / 7-8期

关键词：

laser ablation; double pulse; laser induced breakdown spectroscopy; laser-induced plasmas;

D O I：

10.1016/j.sab.2005.06.012

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A systematic measurement of plasma properties (temperature, electron number density, pressure) was performed during LIBS of silicon with two nanosecond pulsed lasers operating at 1064 nm. The spectral characteristics of the plasmas were measured to determine the plasma properties as delay time between the laser pulses was changed from 0 to 10 ms. The plasma properties and crater dimensions increased abruptly from 100 to 200 ns. The crater depth increased from 2 to 10 mu m (volume increased about 5 times) per pair of double pulses. Enhanced mass removal was indicative of a phase explosion mechanism. Spatial images of plasma emission were measured to study the dynamics of plasma expansion. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：960 / 967

页数：8

共 34 条

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