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Effect of the axial magnetic field on coexisting stimulated Raman and Brillouin scattering of a circularly polarized beam

Published online by Cambridge University Press:  06 December 2016

Ashish Vyas ,
Swati Sharma ,
Ram Kishor Singh  and
R.P. Sharma
Ashish Vyas
Affiliation:
Centre for Energy Studies, IIT Delhi, Delhi, 110016, India
Swati Sharma
Affiliation:
Centre for Energy Studies, IIT Delhi, Delhi, 110016, India
Ram Kishor Singh*
Affiliation:
Centre for Energy Studies, IIT Delhi, Delhi, 110016, India
R.P. Sharma
Affiliation:
Centre for Energy Studies, IIT Delhi, Delhi, 110016, India
*
Address correspondence and reprint requests to: R.K. Singh, Centre for Energy Studies, IIT Delhi, Delhi, 110016, India. E-mail: ram007kishor@gmail.com
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Abstract

This paper presents a model to study the two prominent coexisting instabilities, stimulated Raman (SRS), and stimulated Brillouin scattering (SBS) in the presence of background axial magnetic field. In the context of laser-produced plasmas, this model is very useful in the situations where a self-generated axial magnetic field is present as well as where an external axial magnetic field is applied. Due to the interplay between both the scattering processes, the behavior of one scattering process is greatly modified in the presence of another coexisting scattering process. The impact of this coexisting phenomenon and axial magnetic field on the back reflectivity of scattered beams has been explored. It has been demonstrated that the back reflectivity gets modified significantly due to the coexistence of both the scattering processes (SRS and SBS) as well as due to the axial magnetic field. Results are also compared with the three-wave interaction case (isolated SRS or SBS case).

Keywords

Stimulated Brillouin scatteringStimulated Raman scattering
Type
Research Article
Information
Laser and Particle Beams , Volume 35 , Issue 1 , March 2017 , pp. 19 - 25
Copyright
Copyright © Cambridge University Press 2016 

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