Open-path laser-induced plasma spectrometry for remote analytical measurements on solid surfaces

被引:82
作者
Palanco, S
Baena, JM
Laserna, JJ [1 ]
机构
[1] Univ Malaga, Fac Sci, Dept Analyt Chem, E-29071 Malaga, Spain
[2] Acerinox SA, E-11370 Los Barrios, Spain
关键词
remote analysis; steel; laser induced plasma; atomic emission spectrometry;
D O I
10.1016/S0584-8547(01)00388-3
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
Open-path laser-induced plasma spectrometry has been studied for elemental analysis at a distance of 45 m from the target. The 230-mJ pulsed radiation of a Q-switched Nd:YAG laser at 1064 nm has been used to produce a plasma on the sample and light emission has been collected under an off-axis open-path scheme. Under such conditions, the main variables influencing the signal response such as beam focal conditions, laser incidence angle and laser penetration depth have been identified and diagnosed on the basis of spectral signal-to-noise ratio considerations. The incidence angle is critical beyond 60degrees. Crater morphology and ablation rates have been studied also. A semi-quantitative analysis of several stainless steel grades has beets implemented using a pattern recognition algorithm, which allowed to discriminate successfully the samples on the basis of their variable content in alloying elements. (C) 2002 Elsevier Science B.V All rights reserved.
引用
收藏
页码:591 / 599
页数:9
相关论文
共 22 条
[1]  
[Anonymous], 1993, TOPICS REMOTE SENSIN
[2]  
Austin R. W, 1974, OPTICAL ASPECTS OCEA
[3]   Remote sensing and GIS-based regional geomorphological mapping -: a tool for land use planning in developing countries [J].
Bocco, G ;
Mendoza, M ;
Velázquez, A .
GEOMORPHOLOGY, 2001, 39 (3-4) :211-219
[4]   Fluorescence lidar technique for the remote sensing of stone monuments [J].
Cecchi, Giovanna ;
Pantani, Luca ;
Raimondi, Valentina ;
Tomaselli, Luisa ;
Lamenti, Gioia ;
Tiano, Piero ;
Chiari, Roberto .
JOURNAL OF CULTURAL HERITAGE, 2000, 1 (01) :29-36
[5]   REMOTE ELEMENTAL ANALYSIS BY LASER-INDUCED BREAKDOWN SPECTROSCOPY USING A FIBEROPTIC CABLE [J].
CREMERS, DA ;
BAREFIELD, JE ;
KOSKELO, AC .
APPLIED SPECTROSCOPY, 1995, 49 (06) :857-860
[6]   Lidar system for remote environmental studies [J].
Gondal, MA ;
Mastromarino, J .
TALANTA, 2000, 53 (01) :147-154
[7]   REMOTE-SENSING OF CROP PARAMETERS WITH A POLARIZED, FREQUENCY-DOUBLED ND-YAG LASER [J].
KALSHOVEN, JE ;
TIERNEY, MR ;
DAUGHTRY, CST ;
MCMURTREY, JE .
APPLIED OPTICS, 1995, 34 (15) :2745-2749
[8]  
KILLINGER DK, 1983, SPRINGER SERIES OPTI
[9]   Characterization of laser-induced breakdown spectroscopy (LIBS) for application to space exploration [J].
Knight, AK ;
Scherbarth, NL ;
Cremers, DA ;
Ferris, MJ .
APPLIED SPECTROSCOPY, 2000, 54 (03) :331-340
[10]  
Measures R., 1988, LASER REMOTE CHEM AN, DOI DOI 10.1039/b400354c