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Titolo:
Spectroscopic characterization of laser induced breakdown in aluminium-lithium alloy samples for quantitative determination of traces
Autore:
Gomba, JM; DAngelo, C; Bertuccelli, D; Bertuccelli, G;
Indirizzi:
UNCPBA, Fac Ciencias Exactas, Inst Fis Arroyo Seco, Tandil, Argentina UNCPBA Tandil Argentina xactas, Inst Fis Arroyo Seco, Tandil, Argentina
Titolo Testata:
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
fascicolo: 6, volume: 56, anno: 2001,
pagine: 695 - 705
SICI:
0584-8547(20010629)56:6<695:SCOLIB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
ND-YAG LASER; SPECTROCHEMICAL ANALYSIS; STEEL; PLASMAS; XE; COPPER; SPARK;
Keywords:
laser induced breakdown spectroscopy; atomic emission; aluminum alloy; plasma temperature; electron density;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Gomba, JM UNCPBA, Fac Ciencias Exactas, Inst Fis Arroyo Seco, Pinto 399,B7000GHG, Tandil, Argentina UNCPBA Pinto 399,B7000GHG Tandil Argentina , Tandil, Argentina
Citazione:
J.M. Gomba et al., "Spectroscopic characterization of laser induced breakdown in aluminium-lithium alloy samples for quantitative determination of traces", SPECT ACT B, 56(6), 2001, pp. 695-705

Abstract

We present here the results of the application of laser induced breakdown spectroscopy (LIBS) to a sample of a solid aluminum-lithium alloy, in whichthe 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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Documento generato il 24/11/20 alle ore 14:21:11