Numerical simulation of an ICF target explosion in a stratified gas atmosphere

Conference · Wed Jan 01 00:00:00 EST 1986 · Transactions of the American Nuclear Society; (USA)

OSTI ID:6860563

Bartel, T J; Peterson, R R; Moses, G A ^[1]

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1. Univ. of Wisconsin, Madison (USA)

Two-dimensional radiation hydrodynamics simulations of a light-ion fusion target-generation microfireball in a stratified gas atmosphere have been performed. Region A is comprised of helium gas; nitrogen is in region B at equal pressure (10 Torr). The target location varied from 10 to 100 cm both below and above the interface. Target microexplosions of 200 and 800 MJ were investigated. The intent of this configuration was to determine if the stratified gas (with different opacities) could be used to reduce the overpressure on the diodes placed at the walls of the target chamber and also the diagnostic equipment placed below the target explosion position in the nitrogen layer. Nonspherical fireball propagation caused by venting of the fireball once its radiation front reached the N{sub 2}/He interface was investigated. The interface is within the distance from the target where the fireball shock breaks away from the radiation diffusion wave. A two-dimensional radiation hydrodynamics code with a single radiation temperature and a single fluid temperature was used to perform the calculations on a Cray-1 computer. Results are given. 3 figs.

• OSTI ID: 6860563
• Report Number(s): CONF-860610-Summs.; CODEN: TANSA; TRN: 90-022140
• Journal Information: Transactions of the American Nuclear Society; (USA), Vol. 52; Conference: American Nuclear Society annual meeting, Reno, NV (USA), 15-20 Jun 1986; ISSN 0003-018X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EXPLOSIONS
COMPUTERIZED SIMULATION
ION BEAM FUSION REACTORS
ION BEAM TARGETS
ATMOSPHERES
GASES
HELIUM
HYDRODYNAMICS
NITROGEN
STRATIFICATION
TARGET CHAMBERS
THEORETICAL DATA
TWO-DIMENSIONAL CALCULATIONS
WAVE PROPAGATION
ACCELERATOR FACILITIES
DATA
ELEMENTS
FLUID MECHANICS
FLUIDS
INFORMATION
MECHANICS
NONMETALS
NUMERICAL DATA
RARE GASES
SIMULATION
TARGETS
THERMONUCLEAR REACTORS
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