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Electron number density and temperature measurements in laser produced brass plasma

Published online by Cambridge University Press:  26 February 2010

A. A. Shaltout ,
N. Y. Mostafa ,
M. S. Abdel-Aal  and
H. A. Shaban
A. A. Shaltout*
Affiliation:
Spectroscopy Department, Physics Division, National Research Center, El Behooth Str., 12622 Dokki, Cairo, Egypt Faculty of Science, Taif University, 21974 Taif, P.O. Box, 888, Saudi Arabia
N. Y. Mostafa
Affiliation:
Faculty of Science, Taif University, 21974 Taif, P.O. Box, 888, Saudi Arabia Chemistry Department, Faculty of Science, Ismailia, Suez Canal University, Ismailia, Egypt
M. S. Abdel-Aal
Affiliation:
Spectroscopy Department, Physics Division, National Research Center, El Behooth Str., 12622 Dokki, Cairo, Egypt Faculty of Science, Taif University, 21974 Taif, P.O. Box, 888, Saudi Arabia
H. A. Shaban
Affiliation:
Spectroscopy Department, Physics Division, National Research Center, El Behooth Str., 12622 Dokki, Cairo, Egypt
*
shaltout_a@hotmail.com
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Abstract

Laser-induced breakdown spectroscopy (LIBS) has been used for brass plasma diagnostic using a Nd:YAG laser at 1064 nm. Optimal experimental conditions were evaluated, including repetition rate, number of laser shots on sample, and laser energy. The plasma temperatures and the electron number densities were determined from the emission spectra of LIBS. Cu and Zn spectral lines were used for excitation temperature calculation using Saha-Boltzmann distribution as well as line pair ratio. It was found that, the excitation temperature calculated by using Saha-Boltzmann distribution and line pair ratio methods are not the same. The electron number density has been evaluated from the Stark broadening of Hα transition at 656.27 nm and the calculated electron number density is agreement with literature.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 50 , Issue 1: Focus on Electrical Contacts , April 2010 , 11003
Copyright
© EDP Sciences, 2010

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