LASER SAMPLING METHODS FOR REDUCING THERMAL EFFECTS
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United States of America Patent
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Issued Date -
Sep 18, 2014
app pub date -
Mar 13, 2014
filing date -
Mar 15, 2013
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Abstract
A method for reducing thermal effects in laser ablation optical emission spectrometry includes creating discrete ablation spots along an analysis line on a target surface. At least one of the following is also carried out. First, the ablation spots are positioned so that a pair of successive ablation spots are spaced apart from one another along the analysis line and are separated from one another by another ablation spot. Second, when the analysis line comprises generally parallel, adjacent analysis line segments, the ablation spots are positioned so that (A) a pair of successive ablation spots are on different analysis line segments, and (B) the successive ablation spots are positioned to be at different longitudinal positions along the analysis line segments when the different analysis line segments are adjacent to one another. As a result, a linear scan of isolated ablation spots can be generated.
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