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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 24 — Dec. 2, 2013
  • pp: 29755–29768

Enhancement of LIBS emission using antenna-coupled microwave

Ali Khumaeni, Tampo Motonobu, Akaoka Katsuaki, Miyabe Masabumi, and Wakaida Ikuo  »View Author Affiliations

Optics Express, Vol. 21, Issue 24, pp. 29755-29768 (2013)

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Intensified microwave coupled by a loop antenna (diameter of 3 mm) has been employed to enhance the laser-induced breakdown spectroscopy (LIBS) emission. In this method, a laser plasma was induced on Gd2O3 sample at a reduced pressure by focusing a pulsed Nd:YAG laser (532 nm, 10 ns, 5 mJ) at a local point, at which electromagnetic field was produced by introducing microwave radiation using loop antenna. The plasma emission was significantly enhanced by absorbing the microwave radiation, resulting in high-temperature plasma and long-lifetime plasma emission. By using this method, the enhancement of Gd lines was up to 32 times, depending upon the emission lines observed. A linear calibration curve of Ca contained in the Gd2O3 sample was made. The detection limit of Ca was approximately 2 mg/kg. This present method is very useful for identification of trace elements in nuclear fuel and radioactive materials.

© 2013 Optical Society of America

OCIS Codes
(140.3440) Lasers and laser optics : Laser-induced breakdown
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6370) Spectroscopy : Spectroscopy, microwave
(350.5400) Other areas of optics : Plasmas
(280.1545) Remote sensing and sensors : Chemical analysis
(300.6365) Spectroscopy : Spectroscopy, laser induced breakdown

ToC Category:

Original Manuscript: September 3, 2013
Revised Manuscript: October 21, 2013
Manuscript Accepted: October 22, 2013
Published: November 25, 2013

Ali Khumaeni, Tampo Motonobu, Akaoka Katsuaki, Miyabe Masabumi, and Wakaida Ikuo, "Enhancement of LIBS emission using antenna-coupled microwave," Opt. Express 21, 29755-29768 (2013)

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