High-areal-density fuel assembly in direct-drive cryogenic implosions

T. C. Sangster, V. N. Goncharov, P. B. Radha, V. A. Smalyuk, R. Betti, R. S. Craxton, J. A. Delettrez, D. H. Edgell, V. Yu Glebov, D. R. Harding, D. Jacobs-Perkins, J. P. Knauer, F. J. Marshall, R. L. McCrory, P. W. McKenty, D. D. Meyerhofer, S. P. Regan, W. Seka, R. W. Short, S. SkupskyJ. M. Soures, C. Stoeckl, B. Yaakobi, D. Shvarts, J. A. Frenje, C. K. Li, R. D. Petrasso, F. H. Séguin

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52 Scopus citations


The first observation of ignition-relevant areal-density deuterium from implosions of capsules with cryogenic fuel layers at ignition-relevant adiabats is reported. The experiments were performed on the 60-beam, 30-kJUV OMEGA Laser System. Neutron-averaged areal densities of 202±7mg/cm2 and 182±7mg/cm2 (corresponding to estimated peak fuel densities in excess of 100g/cm3) were inferred using an 18-kJ direct-drive pulse designed to put the converging fuel on an adiabat of 2.5. These areal densities are in good agreement with the predictions of hydrodynamic simulations indicating that the fuel adiabat can be accurately controlled under ignition-relevant conditions.

Original languageEnglish
Article number185006
JournalPhysical Review Letters
Issue number18
StatePublished - 8 May 2008
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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