Hole-Modulated Plasma for Suppressing Background Emission in Laser-Induced Shock Wave Plasma Spectroscopy

元データ 2003-08-15 Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics

概要

An experimental study has been carried out on the dynamical process taking place in the partially confined secondary plasma generated by a Q-switched Nd-YAG laser (47 mJ, 8 ns) focused into a small hole of proper size on a zinc plate in a surrounding air of reduced pressure. The undesirable continuum emission from the primary plasma is effectively kept within the hole, away from the expanding secondary plasma, and enhances the detection sensitivity of the plasma emission in elemental analysis. The simultaneous detection of density jump and emission of Zn I 481.0 nm and the time profile of averaged temperature in the expanding plasma support the scenario of the shock wave excitation mechanism, which has been proposed by the present authors.

著者

Kagawa Kiichiro Department Of Fiber Amenity Engineering Graduate School Of Engineering Fukui University
KURNIAWAN Hendrik Research Center of Maju Makmur Mandiri Foundation
SUYANTO Hery Research Center of CV. Maju Makmur Mandiri
LIE Tjung Meridien Counseling
Tjia May Department Of Physics Faculty Of Mathematics And Natural Sciences Bandung Institute Of Technology
Lie Tjung Meridien Counseling, Taman Sari Raya No. 85P, Jakarta Barat 11150, Indonesia
Kagawa Kiichiro Department of Physics, Faculty of Education and Regional Studies, Fukui University, 9-1 bunkyo 3-chome, Fukui 910, Japan
Suyanto Hery Research Center of CV. Maju Makmur Mandiri, Srengseng Raya No. 40, Jakarta Barat 11630, Indonesia
Kurniawan Hendrik Research Center of CV. Maju Makmur Mandiri, Srengseng Raya No. 40, Jakarta Barat 11630, Indonesia

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