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Title: Spatial diagnostics of the laser induced lithium fluoride plasma

Abstract

We present spatial characteristics of the lithium fluoride plasma generated by the fundamental and second harmonic of a Nd:YAG laser. The plume emission has been recorded spatially using five spectrometers covering the spectral region from 200 nm to 720 nm. The electron density is measured from the Stark broadened line profile of the line at 610.37 nm, whereas the plasma temperature has been determined using the Boltzmann plot method including all the observed spectral lines of lithium. Both the plasma parameters; electron density and plasma temperature decrease with the increase of the distance from the target surface. The thermal conduction towards the target, the radiative cooling of the plasma, and the conversion of thermal energy into kinetic energy are the main mechanisms responsible for the spatially decrease of the plasma parameters.

Authors:
; ; ; ;  [1]
  1. Atomic and Molecular Physics Laboratory, Department of Physics, Quaid-i-Azam University, 45320 Islamabad (Pakistan)
Publication Date:
OSTI Identifier:
22072498
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 6; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BOLTZMANN EQUATION; ELECTRON DENSITY; ELECTRON TEMPERATURE; EMISSION; ENERGY CONVERSION; ION TEMPERATURE; KINETIC ENERGY; LASER TARGETS; LASER-PRODUCED PLASMA; LINE BROADENING; LITHIUM FLUORIDES; NEODYMIUM LASERS; PLUMES; RADIATIVE COOLING; SPECTROMETERS; STARK EFFECT; THERMAL CONDUCTION

Citation Formats

Baig, M. A., Qamar, Aisha, Fareed, M. A., Anwar-ul-Haq, M., and Ali, Raheel. Spatial diagnostics of the laser induced lithium fluoride plasma. United States: N. p., 2012. Web. doi:10.1063/1.4729894.
Baig, M. A., Qamar, Aisha, Fareed, M. A., Anwar-ul-Haq, M., & Ali, Raheel. Spatial diagnostics of the laser induced lithium fluoride plasma. United States. doi:10.1063/1.4729894.
Baig, M. A., Qamar, Aisha, Fareed, M. A., Anwar-ul-Haq, M., and Ali, Raheel. Fri . "Spatial diagnostics of the laser induced lithium fluoride plasma". United States. doi:10.1063/1.4729894.
@article{osti_22072498,
title = {Spatial diagnostics of the laser induced lithium fluoride plasma},
author = {Baig, M. A. and Qamar, Aisha and Fareed, M. A. and Anwar-ul-Haq, M. and Ali, Raheel},
abstractNote = {We present spatial characteristics of the lithium fluoride plasma generated by the fundamental and second harmonic of a Nd:YAG laser. The plume emission has been recorded spatially using five spectrometers covering the spectral region from 200 nm to 720 nm. The electron density is measured from the Stark broadened line profile of the line at 610.37 nm, whereas the plasma temperature has been determined using the Boltzmann plot method including all the observed spectral lines of lithium. Both the plasma parameters; electron density and plasma temperature decrease with the increase of the distance from the target surface. The thermal conduction towards the target, the radiative cooling of the plasma, and the conversion of thermal energy into kinetic energy are the main mechanisms responsible for the spatially decrease of the plasma parameters.},
doi = {10.1063/1.4729894},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 6,
volume = 19,
place = {United States},
year = {2012},
month = {6}
}