Using Direct-Drive Double-Shell Capsules at the Omega Laser to Understand Degradation Mechanisms
Abstract
Double-shell capsules have been suggested as a noncryogenic alternative ignition design for the National Ignition Facility. A large number of indirectly driven double-shell capsules have now been shot at both the Nova and Omega lasers. Designs that are most sensitive to the asymmetries arising from gold M-band preheat due to laser interaction with gold from the hohlraum have performed poorly, while designs that are less sensitive to this asymmetry have performed well.[1] In order to look at this issue further, we have recently shot direct-drive designs, which have no gold M-band preheat. Results from these experiments will be reported. [1] W. S. Varnum, N. D. Delamater, S. C. Evans, P. L. Gobby, J. E. Moore, J. M. Wallace, R. G. Watt, J. D. Colvin, R. Turner, V. Glebov, J. Soures, and C. Stoeckl, ``Progress toward Ignition with Noncryogenic Double-Shell Capsules,'' Physical Review Letters, 84, 5153 (2000). This work was performed under the auspices of the U. S. Department of Energy by the Los Alamos National Laboratory under contract No. W-7405-Eng-36.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2001
- Bibcode:
- 2001APS..DPPFO2011V