skip to main content

SciTech ConnectSciTech Connect

Title: Reduction of stimulated Brillouin backscattering with plasma beam smoothing

Plasma induced incoherence (PII) can strongly modify the growth rates of stimulated scattering instabilities. A special double-target design was used to quantify the effect of PII on stimulated Brillouin scattering (SBS). Successive shots using all or part of these targets led to the characterization of temporal and spatial incoherence of a laser pulse after propagation through a foam plasma and to the quantification of the reduction of SBS from the second target. Numerical simulations were used to identify the main physical mechanisms in play.
Authors:
; ; ;  [1] ; ; ; ;  [2] ; ;  [3] ; ;  [4]
  1. Laboratoire pour l'Utilisation des Lasers Intenses, Ecole Polytechnique, Palaiseau (France)
  2. CEA, DAM, DIF, F-91297 Arpajon (France)
  3. P.N. Lebedev Physical Institute, Russian Academy of Science, Moscow (Russian Federation)
  4. GSI Helmhotzzentrum fur Schwerionenforschung, 64291 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
22408333
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BACKSCATTERING; BEAMS; BRILLOUIN EFFECT; COMPUTERIZED SIMULATION; FOAMS; LASER TARGETS; LASERS; PLASMA; PULSES