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(OV3/3) Recent Advances in Direct-Drive ICF Target Physics at the Laboratory for Laser Energetics

R. L. McCrory, J. M. Soures, A. Babushkin, R. E. Bahr, R. Betti, T. R. Boehly, R. Boni, D. K. Bradley, T. J. B. Collins, R. S. Craxton, J. D. Delettrez, W. R. Donaldson, R. Epstein, V. Yu. Glebov, V. N. Goncharov, R. Q. Gram, D. R. Harding, D. G. Hicks2, B. Hughes, P. A. Jaanimagi, T. J. Kessler, J. Knauer, C. K. Li2, S. J. Loucks, F. J. Marshall, P. W. McKenty, D. D. Meyerhofer, A. V. Okishev, S. Padalino1 R. D. Petrasso2, P. B. Radha, S. P. Regan, F. H. Seguin2, W. Seka, R. W. Short, A. Simon, M. D. Skeldon, S. Skupsky, C. Stoeckl, R. P. J. Town, M. D. Wittman, B. Yaakobi, and J. D. Zuegel

University of Rochester, Laboratory for Laser Energetics 250 East River Road, Rochester, NY 14623-1299
1 State University of New York at Geneseo
2 Massachusetts Institute of Technology
United States of America

Abstract.  The principal role of the Laboratory for Laser Energetics (LLE) is the development and validation of the direct-drive approach to inertial fusion. The LLE experimental and theoretical programs in support of this mission were organized to provide a moderate-gain option for the U.S. National Ignition Facility (NIF). Experimental implementation of the LLE program is carried out on the LLE's 30-kJ, 60-beam, UV OMEGA laser. This paper summarizes the status of the direct-drive ICF physics program at LLE with emphasis on the development of beam-smoothing techniques, long-scale-length plasma interaction experiments, direct-drive planar-foil hydrodynamic instability experiments, the effect of laser nonuniformity on target stability, integrated spherical target implosion experiments, design of direct-drive targets, development of target diagnostic techniques, and implementation of cryogenic-fuel-layering technology.

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IAEA 2001