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| - Spatially Resolved, Laser-Induced BreakdownSpectroscopy, Development, and Application forthe Analysis of Al and Si in Nickel-Based Alloys
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| - Spatially resolved laser-induced breakdown spectroscopy(SRLIBS) was used for the characterization of aluminumand silicon in nickel-based alloys. The very low invasiveness of the technique was one of the figures of merit ofLIBS; however, the relative complexity of the instrumentoften hindered the widely acceptance of LIBS. Spatiallyresolved LIBS could provide accuracy and precisioncomparable to those obtained with temporally resolvedLIBS (TRLIBS). In the nongated spatially resolved LIBS,the maximum atomic emission could be obtained withrelative low continuum background emission at optimumobservation spatial position. The study was done with aNd:YAG laser at 532 nm, 3.0 mJ laser energy, and 0.2mbar in argon. The experimental results obtained underoptimum conditions were compared to those obtainedwith TRLIBS. SRLIBS gave reliable results without thetedious optimization of the delay time and gate width.
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