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Resonant laser ablation [electronic resource] : Mechanisms and applications

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Ever since the first report of laser action, it has been recognized that laser ablation (evaporation/volatilization) may provide a useful sampling mechanism for chemical analysis. In particular, laser ablation is rapidly gaining popularity as a method of sample introduction for mass spectrometry. While most laser ablation/mass spectrometry has been performed with fixed frequency lasers operating at relatively high intensities/fluences (≥10⁸ W/cm², ≥1 J/cm²), there has been some recent interest in the use of tunable lasers to enhance the ionization yield of selected components in an analytical sample. This process has been termed resonant laser ablation (RLA), and typically relies on irradiation of a sample in a mass spectrometer with modest intensity laser pulses tuned to a one- or two-photon resonant transition in the analyte of interest. Potential advantages of RLA include: (1) simplification of the mass spectrum, by enhancement of signal from the analyte of interest; (2) improvement of the absolute detection limits by improving the ionization efficiency, and (3) improvement in relative sensitivity. The sensitivity enhancement results from reduction of spurious signal, and accompanying noise, in the detection channel. This spurious signal may be due to bleed through from adjacent mass channels, or from isobaric interferences. RLA tends to produce higher mass resolution because of minimal spatial spread in the ion source and small space charge effects. In this manuscript we present a survey of RLA attributes and applications.
Report Numbers
E 1.99:la-ur--94-1859
E 1.99: conf-940556--2
conf-940556--2
la-ur--94-1859
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/1994.
"la-ur--94-1859"
" conf-940556--2"
"DE94013132"
Alfred O. Nier symposium on inorganic mass spectrometry,Durango, CO (United States),10-12 May 1994.
Anderson, J.E.; Smith, C.H.; Eiden, G.C.; Nogar, N.S.; Bodla, R.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14395028