Core Temperature and Density Gradients in ICF

Journal Article · Wed Oct 20 00:00:00 EDT 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1824856· OSTI ID:20630254

Koch, J A; Barbee, Jr, T W; Dalhed, S; Haan, S; Izumi, N; Lee, R W ^[1]; Welser, L A; Mancini, R C ^[2]; Marshall, F J; Meyerhofer, D; Sangster, T C; Smalyuk, V A; Soures, J M ^[3]; Klein, L ^[4]; Golovkin, I ^[5]

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1. University of California, Lawrence Livermore National Laboratory, P.O. Box 808, L-481, Livermore CA, 94550 (United States)
2. Department of Physics, University of Nevada, Reno NV (United States)
3. Laboratory for Laser Energetics, University of Rochester, Rochester NY (United States)
4. Department of Physics and Astronomy, Howard University, Washington DC (United States)
5. Prism Computational Sciences, Inc., Madison WI (United States)

We have developed a multiple monochromatic x-ray imaging diagnostic that uses an array of pinholes coupled to a multilayer Bragg mirror, and we have used this diagnostic to obtain unique multispectral imaging data of inertial-confinement fusion implosion plasmas. Argon dopants in the fuel allow emission images to be obtained in the Ar He-{beta} and Ly-{beta} spectral bands, and these images provide information on core temperature and density profiles. We have analyzed these images to obtain quasi-three-dimensional maps of electron temperature and scaled electron density within the core for several cases of drive symmetry, and we find quantitative and qualitative disagreement with one-dimensional hydrodynamics simulations. We also observed a two-lobed structure evolving for increasingly prolate-asymmetric drive.

• OSTI ID: 20630254
• Journal Information: AIP Conference Proceedings, Vol. 730, Issue 1; Conference: 14. APS topical conference on atomic processes in plasmas, Santa Fe, NM (United States), 19-22 Apr 2004; Other Information: DOI: 10.1063/1.1824856; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
ASYMMETRY
COMPUTERIZED SIMULATION
DATA ANALYSIS
DOPED MATERIALS
ELECTRON DENSITY
ELECTRON TEMPERATURE
HYDRODYNAMICS
IMAGES
INERTIAL CONFINEMENT
ION TEMPERATURE
MONOCHROMATIC RADIATION
ONE-DIMENSIONAL CALCULATIONS
PLASMA
PLASMA DENSITY
PLASMA DIAGNOSTICS
PLASMA SIMULATION
THREE-DIMENSIONAL CALCULATIONS
X RADIATION