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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 23097–23103

Laser-induced plasma peculiarity at low pressures from the elemental lifetime perspective

Soo-Jin Choi and Jack J. Yoh  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23097-23103 (2011)

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The Laser-Induced Breakdown Spectroscopy (LIBS) plasma characteristics are known to strongly dependent on the surrounding pressure. Six different samples (C, Ni, Cu, Sn, Al, Zn) are used to support the existence of a `soft spot’ in the vicinity of 1 torr where the maxima in plasma lifetime is observed. With pressure decrease, the elemental lifetimes of samples except for carbon increased until 1 torr and started to decline with continued pressure drop. The boiling point and electronegativity of the samples are amongst the physicochemical properties that are used to explain this peculiarity.

© 2011 OSA

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3440) Lasers and laser optics : Laser-induced breakdown
(280.5395) Remote sensing and sensors : Plasma diagnostics
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 22, 2011
Revised Manuscript: October 13, 2011
Manuscript Accepted: October 14, 2011
Published: October 31, 2011

Soo-Jin Choi and Jack J. Yoh, "Laser-induced plasma peculiarity at low pressures from the elemental lifetime perspective," Opt. Express 19, 23097-23103 (2011)

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