Emission enhancement in laser-produced plasmas on preheated targets

被引:40
作者
Sangines, R. [1 ]
Sobral, H. [1 ]
Alvarez-Zauco, E. [2 ]
机构
[1] Univ Nacl Autonoma Mexico, CCADET, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, FC, Mexico City 04510, DF, Mexico
来源
APPLIED PHYSICS B-LASERS AND OPTICS | 2012年 / 108卷 / 04期
关键词
INDUCED BREAKDOWN SPECTROSCOPY; HIGH-TEMPERATURES; STAINLESS-STEEL; MASS REMOVAL; SINGLE-PULSE; ABLATION; FEMTOSECOND; ALUMINUM; SPECTROMETRY; SILICON;
D O I
10.1007/s00340-012-5130-6
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Laser-induced plasma was produced on preheated (up to 500 degrees C) aluminum targets in air with a nanosecond-pulsed Nd:YAG laser emitting at 1064 nm. Plasma was generated for laser pulse energies ranging from 60 to 800 mJ and the spatially and time-integrated emission was collected as the sample temperature was increased. Electron temperature was found to be independent of the experimental conditions, while the electron density had a weak dependence on the pulse energy and target temperature. Emission enhancement increased with both varied parameters, although with a tendency to saturation for high-energy and high-temperature regimes. A simple model predicting the ablated volume is discussed in terms of the experimental results.
引用
收藏
页码:867 / 873
页数:7
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