An experimental investigation of the laser produced plasma induced shock wave in the presence of confining walls placed along the axial as well as the lateral direction has been performed. A time resolved Mach Zehnder interferometer is set up to track the primary as well as the reflected shock waves and its effect on the evolving plasma plume has been studied. An attempt has been made to discriminate the electronic and medium density contributions towards the changes in the refractive index of the medium. Two dimensional spatial distributions for both ambient medium density and plasma density (electron density) have been obtained by employing customised inversion technique and algorithm on the recorded interferograms. The observed density pattern of the surrounding medium in the presence of confining walls is correlated with the reflected shock wave propagation in the medium. Further, the shock wave plasma interaction and the subsequent changes in the shape and density of the plasma plume in confined geometry are briefly described.
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April 2016
Research Article|
April 21 2016
Time resolved interferometric study of the plasma plume induced shock wave in confined geometry: Two-dimensional mapping of the ambient and plasma density
Kaushik Choudhury;
Kaushik Choudhury
1IITB Monash Research Academy,
Indian Institute of Technology Bombay
, Mumbai 400076, India
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R. K. Singh;
R. K. Singh
2
Institute for Plasma Research
, Gandhinagar 382428, India
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Surya Narayan
;
Surya Narayan
3Department of Mechanical Engineering,
Indian Institute of Technology Bombay
, Mumbai 400076, India
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Atul Srivastava;
Atul Srivastava
a)
3Department of Mechanical Engineering,
Indian Institute of Technology Bombay
, Mumbai 400076, India
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Ajai Kumar
Ajai Kumar
b)
2
Institute for Plasma Research
, Gandhinagar 382428, India
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a)
E-mail: atulsr@iitb.ac.in
b)
E-mail:ajai@ipr.res.in
Phys. Plasmas 23, 042108 (2016)
Article history
Received:
January 06 2016
Accepted:
April 05 2016
Citation
Kaushik Choudhury, R. K. Singh, Surya Narayan, Atul Srivastava, Ajai Kumar; Time resolved interferometric study of the plasma plume induced shock wave in confined geometry: Two-dimensional mapping of the ambient and plasma density. Phys. Plasmas 1 April 2016; 23 (4): 042108. https://doi.org/10.1063/1.4947032
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