Cross-Beam Energy Transfer Platform Development on OMEGA

ORAL

Abstract

A cross-beam energy transfer (CBET) platform was activated on OMEGA. A gas jet was heated by ten 500-ps, 351-nm beams that used phase plates to generate a ~2-mm-diam spherical plasma. Optical Thomson scattering measured a peak temperature of ~700 eV over a uniform ~5 x 1019 cm–3 electron density plateau of ~1 mm. These results are in good agreement with radiation–hydrodynamics simulations performed by HYDRA. To study CBET, a wavelength‑tunable UV beam (Δλ3w ~ 3.5 nm) and a 351-nm beam act as the probe and pump beams, respectively. The frequency of the probe was tuned so that the beat frequency of the crossed beams was resonant with ion-acoustic waves in the plasma, causing Brillouin scattering, which transferred energy between the beams. The results will be compared to LPSE simulations to understand limitations of linear CBET modeling.

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Presenters

  • Aaron Michael Hansen

    University of Rochester Laboratory for Laser Energetics

Authors

  • Aaron Michael Hansen

    University of Rochester Laboratory for Laser Energetics

  • David Turnbull

    Laboratory for Laser Energetics, U. of Rochester, University of Rochester Laboratory for Laser Energetics

  • Daniel J Haberberger

    University of Rochester Laboratory for Laser Energetics, Univ of Rochester LLE, Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Univ of Rochester

  • Joe Katz

    University of Rochester Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, Univ of Rochester, University of Rochester

  • Dino Mastrosimone

    Laboratory for Laser Energetics, University of Rochester Laboratory for Laser Energetics

  • Adam Bennett Sefkow

    Laboratory for Laser Energetics, University of Rochester Laboratory for Laser Energetics

  • Russell Follett

    Univ of Rochester, Laboratory for Laser Energetics, U. of Rochester, University of Rochester Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester

  • John P. Palastro

    University of Rochester Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester

  • Dustin H Froula

    University of Rochester Laboratory for Laser Energetics, Univ of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, University of Rochester