High-Areal-Density Cryogenic D2 Implosions on OMEGA
Abstract
Direct-drive implosions of cryogenic D_2-filled capsules are being performed on the OMEGA laser. The targets and drive pulses are energy scaled from the baseline direct-drive ignition design developed for the NIF. The cold-fuel areal density (ρR) achieved during the burn phase is an important measure of target performance: adequate fuel ρR is one of the prerequisites for ``hot-spot'' ignition. On OMEGA, ρR's are inferred from the energy loss of D^3He protons. Low-α implosions have produced ρR's in excess of 100 mg/cm^2, while high-α experiments have produced yields in excess of 2 × 10^11. Higher ρR's are observed in capsules with smoother inner ice surfaces, and, in general, the inferred ρR's agree with 1-D predictions. This talk will summarize the results of several-dozen implosions. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC52-92SF19460.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 2004
- Bibcode:
- 2004APS..DPPCO1003S