|
|||||
|
|
Emission Spectrochemical Analysis of Metals Using a Nitrogen Laser |
|
| Authors: | H Kurniawan A N Chumakov Tjung Jie Lie May On Tjia M Ueda K Kagawa |
| Institution: | (1) Maju Makmur Mandiri, Research Center of CV, Srengseng Raya No. 40, Jakarta Barat, 11630, Indonesia;(2) Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, Minsk;(3) Meridien Counseling, Jakarta Barat, Indonesia;(4) Department of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Indonesia;(5) Department of Physics, Faculty of Education and Regional Studies, Fukui University, Fukui, 910, Japan |
| Abstract: | Comparative studies of the possibilities of using pulsed nitrogen and Nd:YAG lasers for emission spectrochemical analysis of copper-zinc alloys have been made. The nitrogen laser developed on the basis of the commercial excimer laser provided an energy of radiation pulses of 5 mJ with an error of less than 0.8% at a repetition frequency of 100 Hz. The high stability and the high pulse repetition frequency of the nitrogen laser were attained due to the additional high-speed fan inside the laser chamber, which provided agitation and circulation of the gas mixture. It has been shown by experiment that the spectral emission of the plasma formed by means of the nitrogen laser is characterized by intensity fluctuations with a root-mean-square deviation of 1.4%, whereas in the case of using an Nd:YAG laser it was 14.3%. The advantages of the nitrogen laser that are due to the increased signal-to-background ratio and the suppression of the selective evaporation effect have been revealed. |
| Keywords: | pulsed nitrogen laser laser ablation laser plasma emission spectrochemical analysis |
| 本文献已被 SpringerLink 等数据库收录！ | |