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Title: Anisotropy of radiation emitted from planar wire arrays

The planar wire array (PWA) is a promising load for new multi-source inertial confinement fusion (ICF) hohlraums [B. Jones et al., Phys. Rev. Lett. 104, 125001 (2010)]. The hohlraum radiation symmetry is an important issue for ICF. It was found that extreme ultraviolet and sub-keV photon emission from PWAs may have considerable anisotropy in the load azimuthal plane. This experimental result is obtained on the UNR 1–1.7 MA Zebra generator. The time-dependent anisotropy effect is detected. This feature is studied in 2D numerical simulations and can be explained by initial anisotropy of implosion of those non-cylindrical loads radiating essentially as surface sources in sub-keV quanta and also by radiation absorption in cold magnetized plasma tails forming in the direction of magnetic compression.
Authors:
; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Physics, University of Nevada, Reno, Nevada 89557 (United States)
  2. Laboratorie de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau (France)
  3. Icarus Research, Inc., P. O. Box 30780, Bethesda, Maryland 20824-0780 (United States)
  4. Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375 (United States)
Publication Date:
OSTI Identifier:
22227918
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 7; Other Information: (c) 2013 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; ANISOTROPY; COMPUTERIZED SIMULATION; CYLINDRICAL CONFIGURATION; EXTREME ULTRAVIOLET RADIATION; ICF DEVICES; INERTIAL CONFINEMENT; KEV RANGE; MAGNETIC COMPRESSION; NUMERICAL ANALYSIS; PHOTON EMISSION; PLASMA; PLASMA SIMULATION; TIME DEPENDENCE