title: Suppression of stimulated brillouin scattering by increased landau damping in multiple-ion-species hohlraum plasmas.
abstract: We demonstrate that multiple-ion-species plasmas greatly reduce stimulated Brillouin scattering (SBS) in high-electron temperature inertial confinement fusion hohlraums. Landau damping is increased by adding hydrogen to a CO(2) gas filled hohlraum. We find that the SBS reflectivity decreases monotonically with increasing hydrogen fraction from 18% to 3% with a simultaneous increase of laser beam transmission. Detailed simulations with a 3D laser-plasma interaction code are in agreement with the experimentally observed reduction in backscattered light.
authors: L-399, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551, USA.
authors: P
authors: P
authors: Neumayer
authors: R L
authors: RL
authors: Berger
authors: L
authors: L
authors: Divol
authors: D H
authors: DH
authors: Froula
authors: R A
authors: RA
authors: London
authors: B J
authors: BJ
authors: Macgowan
authors: N B
authors: NB
authors: Meezan
authors: J S
authors: JS
authors: Ross
authors: C
authors: C
authors: Sorce
authors: L J
authors: LJ
authors: Suter
authors: S H
authors: SH
authors: Glenzer