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Title: The efficiency of Raman amplification in the wavebreaking regime

We compare previous analytic predictions, Vlasov-Maxwell simulations, and particle-in-cell results with a new set of comprehensive one and two dimensional particle-in-cell simulations in an effort to clarify apparent discrepancies between the predictions of different models for the efficiency of Raman amplification in the wavebreaking regime. We find reasonable agreement between our particle-in-cell simulations and previous results from Vlasov-Maxwell simulations and analytic work, suggesting a monotonic decrease in conversion efficiency for increased pump intensities past the wavebreaking threshold.
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States)
  2. Department of Electrical Engineering, Technion Israel Institute of Technology, Haifa 32000 (Israel)
  3. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 (United States)
Publication Date:
OSTI Identifier:
22490999
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 7; 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; AMPLIFICATION; ANALYTIC FUNCTIONS; EFFICIENCY; PLASMA SIMULATION; RAMAN EFFECT; TWO-DIMENSIONAL CALCULATIONS