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; Y. F. Lu

doi:10.1063/1.3573807

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, Y. F. Lu

Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

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 language	English (US)
Article number	131501
Journal	Applied Physics Letters
Volume	98
Issue number	13
DOIs	https://doi.org/10.1063/1.3573807
State	Published - Mar 28 2011

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3573807

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title = "Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy",

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.",

author = "Guo, {L. B.} and Li, {C. M.} and W. Hu and Zhou, {Y. S.} and Zhang, {B. Y.} and Cai, {Z. X.} and Zeng, {X. Y.} and Lu, {Y. F.}",

note = "Funding Information: This research work was financially supported by Office of Naval Research (Grant Nos. MURI N00014-05-1-0432 and N00014-09-1-0943).",

year = "2011",

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doi = "10.1063/1.3573807",

language = "English (US)",

volume = "98",

journal = "Applied Physics Letters",

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T1 - Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy

AU - Guo, L. B.

AU - Li, C. M.

AU - Hu, W.

AU - Zhou, Y. S.

AU - Zhang, B. Y.

AU - Cai, Z. X.

AU - Zeng, X. Y.

AU - Lu, Y. F.

N1 - Funding Information: This research work was financially supported by Office of Naval Research (Grant Nos. MURI N00014-05-1-0432 and N00014-09-1-0943).

PY - 2011/3/28

Y1 - 2011/3/28

N2 - 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.

AB - 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.

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Plasma confinement by hemispherical cavity in laser-induced breakdown spectroscopy

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