Dependence of Shell Mix on Feedthrough in Direct Drive Inertial Confinement Fusion

Journal Article · Tue May 11 04:00:00 EDT 2004 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.92.185002· OSTI ID:823698

Regan, S P ^[1]; Delettrez, J A; Goncharov, V N; Marshall, F J; Soures, J M; Smalyuk, V A; Radha, P B; Yaakobi, B; Epstein, R; Glebov, V Yu; Jaanimagi, P A; Meyerhofer, D D; Sangster, T C; Seka, W; Skupsky, S; Stoeckl, C; Frenje, J A; Li, C K; Petrasso, R D; Seguin, F H

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1. Laboratory for Laser Energetics, University of Rochester, Rochester, NY

OAK-B135 The amount of plastic shell material (pusher) mixed with the hydrogen isotope fuel in the outer core of direct-drive inertial confinement fusion implosions is experimentally shown to depend on the amplitude of the initial perturbation seed for the deceleration-phase Rayleigh-Taylor (RT) instability. The seed was varied in a controlled manner by changing the level of perturbation feedthrough from the outer shell surface to the inner shell surface. Implosions with similar RT-growth factors during the deceleration phase are observed to have lower pusher mass densities in the mix region when the seed is reduced by decreasing laser imprint levels, and by imploding more-massive, thicker-shell targets.

• Research Organization: Laboratory for Laser Energetics (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FC03-92SF19460
• OSTI ID: 823698
• Report Number(s): DOE/SF-19460-535; 1445; 2003-5
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 92
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
AMPLITUDES
HYDROGEN ISOTOPES
IMPLOSIONS
INERTIAL CONFINEMENT
INSTABILITY
LASERS
PLASTICS
SEEDS
TARGETS