Dopant radiative cooling effects in indirect-drive Ar-doped capsule implosion experiments

Journal Article · Thu Dec 15 00:00:00 EST 2005 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PHYSREVE.72.0· OSTI ID:20778468

MacFarlane, J J; Golovkin, I E; Wang, P; Woodruff, P ^[1]; Mancini, R C; Welser, L A ^[2]; Bailey, J E; Mehlhorn, T A; Rochau, G A ^[3]; Koch, J A ^[4]

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1. Prism Computational Sciences, Inc., 455 Science Drive, Suite 140, Madison, Wisconsin 53711 (United States)
2. University of Nevada, Reno, Nevada 89557 (United States)
3. Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

We present results from simulations performed to investigate the effects of dopant radiative cooling in inertial confinement fusion indirect-drive capsule implosion experiments. Using a one-dimensional radiation-hydrodynamics code that includes inline collisional-radiative modeling, we compute in detail the non-local thermodynamic equilibrium atomic kinetics and spectral characteristics for Ar-doped DD fuel. Specifically, we present results from a series of calculations in which the concentration of the Ar is varied, and examine the sensitivity of the fuel conditions (e.g., electron temperature) and neutron yield to the Ar dopant concentration. Simulation results are compared with data obtained in OMEGA indirect-drive experiments in which monochromatic imaging and spectral measurements of Ar He{sub {beta}} and Ly{sub {beta}} line emission were recorded. The incident radiation drive on the capsule is computed with a three-dimensional view factor code using the laser beam pointings and powers from the OMEGA experiments. We also examine the sensitivity of the calculated compressed core electron temperatures and neutron yields to the radiation drive on the capsule and to the radiation and atomic modeling in the simulations.

• OSTI ID: 20778468
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 72, Issue 6; Other Information: DOI: 10.1103/PhysRevE.72.066403; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
CAPSULES
DOPED MATERIALS
ELECTRON TEMPERATURE
HYDRODYNAMICS
IMPLOSIONS
INERTIAL CONFINEMENT
LTE
LUMINESCENCE
MONOCHROMATIC RADIATION
NEUTRONS
ONE-DIMENSIONAL CALCULATIONS
PLASMA
PLASMA SIMULATION
RADIATIVE COOLING
SENSITIVITY
THERMODYNAMICS
THREE-DIMENSIONAL CALCULATIONS