Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy

L. B. Guo, C. M. Li, W. Hu, Y. S. Zhou, B. Y. Zhang, Z. X. Cai, X. Y. Zeng, Yongfeng Lu

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

An aluminum hemispherical cavity (diameter: 11.1 mm) was used to confine plasmas produced by a KrF excimer laser in air from a steel target with a low concentration manganese in laser-induced breakdown spectroscopy. A significant enhancement (factor >12) in the emission intensity of Mn lines was observed at a laser fluence of 7.8 J/ cm2 when the plasma was confined by the hemispherical cavity, leading to an increase in plasma temperature about 3600 K. The maximum emission enhancement increased with increasing laser fluence. The spatial confinement mechanism was discussed using shock wave theory.

Original languageEnglish (US)
Article number131501
JournalApplied Physics Letters
Volume98
Issue number13
DOIs
StatePublished - Mar 28 2011

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plasma control
laser-induced breakdown spectroscopy
fluence
cavities
augmentation
plasma temperature
excimer lasers
lasers
manganese
shock waves
low concentrations
steels
aluminum
air

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy. / Guo, L. B.; Li, C. M.; Hu, W.; Zhou, Y. S.; Zhang, B. Y.; Cai, Z. X.; Zeng, X. Y.; Lu, Yongfeng.

In: Applied Physics Letters, Vol. 98, No. 13, 131501, 28.03.2011.

Research output: Contribution to journalArticle

Guo, LB, Li, CM, Hu, W, Zhou, YS, Zhang, BY, Cai, ZX, Zeng, XY & Lu, Y 2011, 'Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy', Applied Physics Letters, vol. 98, no. 13, 131501. https://doi.org/10.1063/1.3573807
Guo, L. B. ; Li, C. M. ; Hu, W. ; Zhou, Y. S. ; Zhang, B. Y. ; Cai, Z. X. ; Zeng, X. Y. ; Lu, Yongfeng. / Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy. In: Applied Physics Letters. 2011 ; Vol. 98, No. 13.
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