Adaptive femtosecond laser-induced breakdown spectroscopy of uranium

被引：20

作者：

Ko, P. ^{[1
]}

Hartig, K. C. ^{[1
]}

McNutt, J. P. ^{[1
]}

Schur, R. B. D. ^{[1
]}

Jacomb-Hood, T. W. ^{[1
]}

Jovanovic, I. ^{[1
]}

机构：

[1] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 01期

关键词：

ABLATION; PLASMA; NANOSECOND; SOLIDS;

D O I：

10.1063/1.4779042

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Laser-induced breakdown spectroscopy (LIBS) is an established technique for material characterization applicable to a variety of problems in research, industry, environmental studies, and security. LIBS conducted with femtosecond laser pulses exhibits unique properties, arising from the characteristics of laser-matter interactions in this pulse width regime. The time evolution of the electric field of the pulse determines its interaction with sample materials. We present the design and performance of a femtosecond LIBS system developed to systematically optimize the technique for detection of uranium. Sample analysis can be performed in vacuum environment, and the spectral and temporal diagnostics are coupled through an adaptive feedback loop, which facilitates optimization of the signal-to-noise ratio by pulse shaping. Initial experimental results of LIBS on natural uranium are presented. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4779042]

引用

页数：6

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