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Title: A wedged-peak-pulse design with medium fuel adiabat for indirect-drive fusion

In the present letter, we propose the design of a wedged-peak pulse at the late stage of indirect drive. Our simulations of one- and two-dimensional radiation hydrodynamics show that the wedged-peak-pulse design can raise the drive pressure and capsule implosion velocity without significantly raising the fuel adiabat. It can thus balance the energy requirement and hydrodynamic instability control at both ablator/fuel interface and hot-spot/fuel interface. This investigation has implication in the fusion ignition at current mega-joule laser facilities.
Authors:
; ; ;  [1] ; ; ; ;  [1] ;  [2]
  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22299642
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 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; CONTROL; DESIGN; HOT SPOTS; HYDRODYNAMICS; IMPLOSIONS; LASERS; PEAKS; PLASMA INSTABILITY; PULSES; SIMULATION; THERMONUCLEAR FUELS; THERMONUCLEAR IGNITION; TWO-DIMENSIONAL CALCULATIONS