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.

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944.

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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