HYDROGEN EMISSION SPECTROCHEMICAL ANALYSIS USING LASER INDUCED SHOCK WAVE PLASMA

T.J. Lie¹, H. Kurniawan¹, M. Pardede¹, H. Suyamto¹, R. Hedwig², M.O. Tjia³, K. Kagawa⁴ and T. Maruyama⁵

¹Department of Electronic Engineering, Faculty of Industrial Technique, University of Pelita Harapan
²Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Hardware Laboratory, Bina Nusantara University
³Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology
⁴Department of Physics, Faculty of Education and Regional Studies, Fukui University
⁵The Wakasa Wan Energy Research Center

Abstract
Nd-YAG laser of 50 mJ energy and 8 ns pulse width was focused onto quartz sample under reduced air pressure of 2 Torr. A characteristic shock wave secondary plasma was generated. The emission spectra from the plasma clearly consists of the emission lines of H I 656.2 nm (Ha) and H I 486.1 nm (Hb) which are improbable to detect using ordinary laser ablation technique. The hydrogen emission lines of the same quality were also observed from a Sangiran Meteorite found in the soil layer of 700 thousand years old in Java Island. A detection limit of less than 5 ppm was achieved for those H emission lines in this study.

Publication : Physics Journal IPS A5 (2003) 0221 » page of Content » send to a friend » printed version » request for hard-copy Full paper : closed license in format PDF (request for hard-copy) Contact : author(s) Additional info : 4 pages, language English » accessed 24.137 times