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Image analysis of expanding laser-produced lithium plasma plume in variable transverse magnetic field

Published online by Cambridge University Press:  21 April 2011

Ajai Kumar ,
Sony George ,
R.K. Singh ,
Hem Joshi  and
V.P.N. Nampoori
Ajai Kumar*
Affiliation:
Institute for Plasma Research, Gandhinagar, India
Sony George
Affiliation:
ISP, Cochin University of Science and Tech., Cochin, India
R.K. Singh
Affiliation:
Institute for Plasma Research, Gandhinagar, India
Hem Joshi
Affiliation:
Institute for Plasma Research, Gandhinagar, India
V.P.N. Nampoori
Affiliation:
ISP, Cochin University of Science and Tech., Cochin, India
*
Address correspondence and reprint requests to: Ajai Kumar, Institute for Plasma Research, Gandhinagar 382 428, India. E-mail: ajaiipr@ipr.res.in
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Abstract

Using fast imaging technique, the effect of transverse magnetic field on the shape and dynamics of the lithium plasma plume has been studied. Enhancement in the overall emission intensity as well as appearance of distinct structures (lobes) in the plasma plume in the presence of magnetic field has been observed. By introducing a variable magnetic field, the influence of J × B force in expanding plasma plume across the transverse magnetic field has been explored. It appears that J × B force does not has a substantial role in the observed structures in the present case rather different atomic processes, which get affected due to change in plasma parameters, are responsible for appearance of these structures.

Keywords

Effect of magnetic field on laser-produced plasmaFast imagingLi plasma
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 2 , June 2011 , pp. 241 - 247
Copyright
Copyright © Cambridge University Press 2011

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