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Spectroscopic characterization of laser-ablated manganese sulfate plasma

Published online by Cambridge University Press:  28 January 2014

M. Salik ,
M. Hanif ,
J. Wang  and
X. Q. Zhang
M. Salik*
Affiliation:
School of Science, Beijing Jiaotong University, Beijing, China
M. Hanif
Affiliation:
MCS, National University of Sciences &Technology, Rawalpindi, Pakistan
J. Wang
Affiliation:
School of Science, Beijing Jiaotong University, Beijing, China
X. Q. Zhang
Affiliation:
School of Science, Beijing Jiaotong University, Beijing, China
*
Address correspondence and reprint requests to: M. Salik, School of Science, Beijing Jiaotong University, Beijing, China100044. E-mail: salikqau@yahoo.com
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Abstract

In this work, we present the spectroscopic studies of the plasma generated at the surface of manganese sulfate by the fundamental (1064 nm) and second harmonic (532 nm) of a Q-switched Nd:YAG laser. The 4s4p 4F7/2→ 4s 2H9/2 at 438.80 nm, 4p 2I11/2 → 4s22I11/2 at 440.80 nm, 4p 4G11/2 → 4s 2H9/2 at 464.27 nm, 4p 4F5/2→ 4s 4D7/2 at 467.16, 4p 4F5/2 → 4s24G 7/2 at 515.08 nm, and 4p 4F7/2 → 4s2 4G 9/2 at 519.65 nm transitions have been used to estimate the electron temperature through the Boltzmann plot method. The number density has been estimated from the Stark broadened profiles of the spectral line 348.30 nm. The spatial behavior of the electron temperature and number density has been examined at different ambient air pressures and with laser irradiance. The temperature and number density are found to be in the range from 9842 K to 9371 K and 1.58 × 1017 to 3.26 × 1016 cm−3 for the 1064 nm laser, from 9668 to 9297 K and 2.27 × 1017 to 5.79 × 1016 cm−3 for the 532 nm laser.

Keywords

Electron densityLaser ablationManganese plasmaOptical emission spectroscopyPlasma temperature
Type
Research Article
Information
Laser and Particle Beams , Volume 32 , Issue 1 , March 2014 , pp. 137 - 144
Copyright
Copyright © Cambridge University Press 2014 

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