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Experimental Inferences of rhoR Evolution and the Spatial Extent of Mix from the D^3He, 14.7-MeV Proton Line Structure

Domenii publicaţii > Stiinte ingineresti + Tipuri publicaţii > Articol în volumul unei conferinţe

Autori: R.D. Petrasso, C.K. Li, F.H. Seguin, J.A. Frenje, S. Kurebayashi (MIT), P.B. Radha, D.D. Meyerhofer, J.M. Soures, J.A. Delettrez, C. Stoeckl, S. Roberts, V.Yu. Glebov, W. Seka, C. Chiritescu (LLE/UR), T.C. Sangster (LLNL)

Editorial: Proceedings of the 43rd Annual Meeting of the APS Division of Plasma Physics, Long Beach, California, October 29 - November 2, 2001.

Rezumat:

A series of direct-drive implosion experiments using two types of capsules have been performed on the OMEGA laser system. In the first, D^3He is enclosed in a CH shell. The high-energy structure in the 14.7-MeV proton line is identified with the early-time shock yield (when the shell rhoR is relatively small and the line suffers relatively little downshift). The dominant low-energy structure is identified with the later-time compression yield, when the shell rhoR is relatively large (and therefore the line is downshifted significantly more). For the second class of experiments, pure ^3He is enclosed in a CH shell with an inner layer of CD. In this circumstance, the compression 14.7-MeV protons are still present, but the shock yield is nearly gone. This indicates that little if any mix to capsule center has occurred at the time of the shock yield, but that substantial mix has occurred by the time of the compression yield

Cuvinte cheie: conference papers