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Title: Design and experimental study of a secondary hohlraum radiation source with laser focal spots blocked

A design of secondary hohlraum radiation source with laser focal spots blocked is introduced. The hard x-ray radiation such as the gold M-band emission and hot electrons from the coronal plasma were designed to be shielded using a cylindrical shield. Three-dimensional view factor analysis was carried out to optimize the shield structure to achieve higher radiation temperature. An experiment was performed at Shenguang III prototype laser facility to verify the design. Velocity Interferometer System for Any Reflector was used to measure the shock wave speed in a three-stepped Al sample driven by this radiation source and the peak radiation temperature of the radiation source was estimated to be about 90‚ÄČeV.
Authors:
; ; ; ; ; ; ; ;  [1]
  1. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900 (China)
Publication Date:
OSTI Identifier:
22493852
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 1; Other Information: (c) 2016 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; CYLINDRICAL CONFIGURATION; DESIGN; ELECTRONS; EV RANGE; GOLD; HARD X RADIATION; INTERFEROMETERS; LASER CAVITIES; LASERS; PLASMA; RADIATION SOURCES; SECONDARY EMISSION; SHIELDS; SHOCK WAVES; THREE-DIMENSIONAL CALCULATIONS