Crossed-beam energy transfer: Polarization effects and evidence of saturation

D. Turnbull, A. Colaïtis, R. K. Follett, J. P. Palastro, D. H. Froula, P. Michel, C. Goyon, T. Chapman, L. Divol, G. E. Kemp, D. Mariscal, S. Patankar, B. B. Pollock, S J Ross, J. D. Moody, E. R. Tubman, N. C. Woolsey

Research output: Contribution to journalArticlepeer-review


Recent results on crossed-beam energy transfer are presented. Wavelength tuning was used to vary the amount of energy transfer between two beams in a quasi-stationary plasma with carefully controlled conditions. The amount of transfer agreed well with calculations assuming linear ion acoustic waves (IAWs) with amplitudes up to . Increasing the initial probe intensity to access larger IAW amplitudes for otherwise fixed conditions yields evidence of saturation. The ability to manipulate a beam's polarization, which results from the anisotropic nature of the interaction, is revisited; an example is provided to demonstrate how polarization effects in a multibeam situation can dramatically enhance the expected amount of energy transfer.

Original languageEnglish
Article number054017
Number of pages10
JournalPlasma Physics and Controlled Fusion
Issue number5
Publication statusPublished - 5 Apr 2018

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© 2018 IOP Publishing Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.


  • CBET
  • crossed-beam energy transfer
  • inertial confinement fusion
  • ion acoustic waves
  • stimulated Brillouin scattering

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