Anisotropy of radiation emitted from planar wire arrays
- Department of Physics, University of Nevada, Reno, Nevada 89557 (United States)
- Laboratorie de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau (France)
- Icarus Research, Inc., P. O. Box 30780, Bethesda, Maryland 20824-0780 (United States)
- Naval Research Laboratory, Plasma Physics Division, Washington, DC 20375 (United States)
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.
- OSTI ID:
- 22227918
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 7 Vol. 20; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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