A simple time-dependent analytic model of the P2 asymmetry in cylindrical hohlraums
1999; American Institute of Physics; Volume: 6; Issue: 5 Linguagem: Inglês
10.1063/1.873465
ISSN1527-2419
AutoresO. L. Landen, Peter Amendt, L. J. Suter, R. E. Turner, S. G. Glendinning, S. W. Haan, S. M. Pollaine, B. A. Hammel, M. Tabak, M. D. Rosen, J. D. Lindl,
Tópico(s)Laser-Matter Interactions and Applications
ResumoA simple time-dependent analytic view factor model for the P2 asymmetry in cylindrical hohlraums is presented. The model includes the effects of hohlraum wall motion, time-varying hohlraum wall albedo and time-varying hohlraum-to-capsule diameter. The results of the model compare well with predictions from two-dimensional radiation hydrodynamics computer simulations and with time-resolved hohlraum symmetry data obtained at the Nova laser facility [J. T. Hunt and D. R. Speck, Opt. Eng. 28, 461 (1989)] and Omega laser facility [J. M. Sources, R. L. McCrory, C. P. Verdon et al., Phys. Plasmas 3, 2108 (1996)]. The model is also extended to the more complicated but relevant case of a multiple-ring cylindrical hohlraum illumination geometry, the baseline scheme for the National Ignition Facility [J. A. Paisner, J. D. Boyes, S. A. Kumpan, and M. Sorem, ICF Quart. 5, 110 (1995)].
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