<title>Omega experiments and preparation for direct-drive ignition on NIF</title>
2001; SPIE; Volume: 4424; Linguagem: Inglês
10.1117/12.425607
ISSN1996-756X
AutoresS. Skupsky, R. L. McCrory, R. Bahr, T. R. Boehly, T. J. B. Collins, R. S. Craxton, J. A. Delettrez, William R. Donaldson, R. Epstein, V. N. Goncharov, R. Q. Gram, D. R. Harding, P. A. Jaanimagi, Robert L. Keck, J. P. Knauer, S. J. Loucks, F. J. Marshall, P. W. McKenty, D. D. Meyerhofer, Samuel Finley Breese Morse, O. V. Gotchev, P. B. Radha, S. P. Regan, W. Seka, V. A. Smalyuk, J. M. Soures, C. Stöeckl, R. P. J. Town, M. D. Whitman, B. Yaakobi, J. D. Zuegel, R. D. Petrasso, J. A. Frenje, D. G. Hicks, C. K. Li, Frederick Seguin,
Tópico(s)High-pressure geophysics and materials
ResumoDirect-drive laser-fusion ignition experiments rely on detailed understanding and control of irradiation uniformity, the Rayleigh-Taylor instability, and target fabrication. LLE is investigating various theoretical aspects of a direct-drive NIF ignition target based on an 'all-DT' design: a spherical target of approximately 3.5-mm diameter, 1 to 2 micrometers of CH wall thickness, and an approximately 350-micrometers DT-ice layer near the triple point of DT. OMEGA experiments are designed to address the critical issues related to direct-drive laser fusion and to provide the necessary data to validate the predictive capability of LLE computer codes. The cryogenic targets planned for OMEGA are hydrodynamically equivalent to those planned for the NIF. The current experimental studies on OMEGA address all of the essential components of direct- drive laser fusion: irradiation uniformity and laser imprinting, Rayleigh-Taylor growth and saturation, compressed core performance and shell-fuel mixing, laser- plasma interactions and their effect on target performance, and cryogenic target fabrication and handling.
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