A simple time-dependent analytic model of the P{sub 2} asymmetry in cylindrical hohlraums
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)
A simple time-dependent analytic view factor model for the P{sub 2} 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. {bold 28}, 461 (1989)] and Omega laser facility [J. M. Sources, R. L. McCrory, C. P. Verdon {ital et al.}, Phys. Plasmas {bold 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. {bold 5}, 110 (1995)]. {copyright} {ital 1999 American Institute of Physics.}
- OSTI ID:
- 344943
- Report Number(s):
- CONF-981127--
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 6; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Exploring the limits of the National Ignition Facility's capsule coupling
Inertial confinement fusion ablator physics experiments on Saturn and Nova