Journal
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
Volume 56, Issue 6, Pages 695-705Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0584-8547(01)00208-7
Keywords
laser induced breakdown spectroscopy; atomic emission; aluminum alloy; plasma temperature; electron density
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We present here the results of the application of laser induced breakdown spectroscopy (LIBS) to a sample of a solid aluminum-lithium alloy, in which the latter component is at a very low concentration and whose proportion should be determined. The samples were placed in a vacuum chamber filled with a controlled xenon atmosphere, and the emission lines of this element were used to determine the electronic density and temperature of the laser generated plasma. Then, by means of a specially designed algorithm, it is possible to quantify the lithium content in the sample. The laser produced aluminum-lithium alloy plasma was generated by a pulsed Nd+3:YAG laser (50 mJ) the pulse repetition frequency used was varied according to requirement from 1 to 20 Hz. Satisfactory results were obtained for the analytical determination of lithium contents in aluminum-lithium alloys. The lithium concentration was determined in values as low as 300-400 ppm. (C) 2001 Elsevier Science B.V. All rights reserved.
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