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Titolo:
Some comparisons of LIBS measurements using nanosecond and picosecond laser pulses
Autore:
Eland, KL; Stratis, DN; Lai, TS; Berg, MA; Goode, SR; Angel, SM;
Indirizzi:
Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA Univ S Carolina Columbia SC USA 29208 m & Biochem, Columbia, SC 29208 USA
Titolo Testata:
APPLIED SPECTROSCOPY
fascicolo: 3, volume: 55, anno: 2001,
pagine: 279 - 285
SICI:
0003-7028(200103)55:3<279:SCOLMU>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
INDUCED BREAKDOWN SPECTROSCOPY; X-RAYS; ABLATION; PROBE; PLASMAS; IRRADIATION; MICROSCOPY; EXCIMER; METALS;
Keywords:
short pulse LIBS; LIBS; laser-induced breakdown spectroscopy; laser ablation; laser-induced plasmas; LIPS; picosecond LIBS; ultrafast;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Angel, SM Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA Univ S Carolina Columbia SC USA 29208 m, Columbia, SC 29208 USA
Citazione:
K.L. Eland et al., "Some comparisons of LIBS measurements using nanosecond and picosecond laser pulses", APPL SPECTR, 55(3), 2001, pp. 279-285

Abstract

Laser-induced breakdown spectra were measured by using a 1.3 ps laser pulse on glass, steel, and copper. Material ablation with the use of picosecondexcitation is very precise with well-formed sharp-edged craters. The spectra obtained with 570 nm, 1.3 ps excitation decay more quickly and show significantly lower background emission than those that use 1064 nm, similar to7 ns excitation. The background was low enough that excellent laser-inducedspectroscopy (LIBS) spectra were obtained on the three samples by using a single 1.3 ps laser pulse and a nongated detector, Similar results were obtained by using nanosecond excitation but with higher relative background signals. The radiance was similar with the use of pico- or nanosecond excitation; however, the radiant intensity was larger with nanosecond excitation because of the larger plasma.

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Documento generato il 05/12/20 alle ore 01:44:24