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Effects on stimulated forward Raman scattering in magnetized density rippled plasma channel

POSTER

Abstract

A plasma wave and two electromagnetic sideband waves are produced by stimulated forward Raman scattering(SFRS) of an intense laser beam propagating in a static, density rippled plasma channel in the presence of a static magnetic field. Langmuir wave along with two electromagnetic sideband waves are produced. The density ripple interacts with the main Langmuir wave created by the SFRS process, resulting in a high Landau damping on the electrons. The electromagnetic waves are localized within a width ≈ (ca/ωpo), where ‘a’ is the channel radius, ‘ωpo' is the plasma frequency on the channel’s axis and ‘c’ is the speed of light. The plasma wave’s localization is determined by the SFRS growth rate. The electron response to eigenmodes is modified by the non-local impact caused by the static magnetic field, which lowers the region of non-local interaction and hence the growth rate. With increasing pump wave amplitude, the growth rate slows down. A theoretical formalism is thus developed to observe the growth rate of SFRS due to the localization of sideband electromagnetic waves. The interaction region and the growth rate are reduced due to localization effects.

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Presenters

  • K S Senthil Kumaran

    Department of Physics, Lovely Professional University

Authors

  • K S Senthil Kumaran

    Department of Physics, Lovely Professional University

  • Oriza Kamboj

    Lovely Professional University

  • Niti Kant

    Department of Physics, Lovely Professional University

  • Jyoti Rajput

    Department of Physics, Lovely Professional University