Thomson scattering cross section in a magnetized, high-density plasma

A. F. A. Bott and G. Gregori
Phys. Rev. E 99, 063204 – Published 18 June 2019

Abstract

We calculate the Thomson scattering cross section in a nonrelativistic, magnetized, high-density plasma—in a regime where collective excitations can be described by magnetohydrodynamics. We show that, in addition to cyclotron resonances and an elastic peak, the cross section exhibits two pairs of peaks associated with slow and fast magnetosonic waves; by contrast, the cross section arising in pure hydrodynamics possesses just a single pair of Brillouin peaks. Both the position and the width of these magnetosonic-wave peaks depend on the ambient magnetic field and temperature, as well as transport and thermodynamic coefficients, and so can therefore serve as a diagnostic tool for plasma properties that are otherwise challenging to measure.

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  • Received 4 January 2019
  • Revised 27 May 2019

DOI:https://doi.org/10.1103/PhysRevE.99.063204

©2019 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Plasma Physics

Authors & Affiliations

A. F. A. Bott* and G. Gregori

  • Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom

  • *archie.bott@physics.ox.ac.uk

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Issue

Vol. 99, Iss. 6 — June 2019

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