LLE Review Quarterly Report (October-December 1999). Volume 81

Technical Report · Wed Dec 01 00:00:00 EST 1999

DOI:https://doi.org/10.2172/1191179· OSTI ID:1191179

Radha, P. B. ^[1]

---

1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics

This volume of the LLE Review, covering the period October–December 1999, includes a report on the stability of direct-drive NIF capsules. V. N. Goncharov, R. Betti, J. A. Delettrez, P. W. McKenty, S. Skupsky, and R. P. J. Town examine the conditions under which direct-drive NIF capsules ignite. Their numerical study uses two-dimensional hydrodynamic simulations in conjunction with a model that includes the various mechanisms that can influence target performance. Inner-surface roughness of the DT ice of the direct-drive cryogenic capsules and laser nonuniformities have been identified as the principal seeds of the instabilities that can potentially quench ignition. The authors conclude that a target gain greater than 10 can be achieved for a realistic inner-surface ice roughness when beam smoothing with 2-D SSD and a bandwidth greater than 0.5 THz is used.

• Research Organization: Univ. of Rochester, NY (United States). Lab. for Laser Energetics
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Inertial Confinement Fusion
• DOE Contract Number: FC52-92SF19460
• OSTI ID: 1191179
• Report Number(s): DOE/SF/19460-335
• Country of Publication: United States
• Language: English