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Title: Production of enhanced pressure regions due to inhomogeneities in inertial confinement fusion targets

Abstract

It is shown that regions of enhanced pressure have been produced in targets with indirect radiation drive in planar and cylindrically convergent geometry through the interaction between the flows caused by target inhomogeneities and the main target drive. Design calculations for National Ignition Facility (NIF) [J. A. Paisner et al., Laser Focus World 30, 75 (1994)] targets with beryllium ablators formed by bonded hemi-shells [D. C. Wilson et al., Bull. Am. Phys. Soc. 43, 1667 (1998)] indicate that related behavior produces a seed perturbation in the ablator which can in some cases lead to the suppression of ignition. From simulation and analysis of the NIF problem in the planar geometry analog, a scaling for the perturbation, which should be useful for validation of the behavior with lower energy drive and smaller-scale geometries, is derived. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States) (and others)
Publication Date:
OSTI Identifier:
20216065
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LASER TARGETS; INERTIAL CONFINEMENT; PLASMA SIMULATION; PLASMA PRESSURE; DESIGN; INHOMOGENEOUS PLASMA; PLASMA DIAGNOSTICS; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Goldman, S. R., Barnes, Cris W., Caldwell, S. E., Wilson, D. C., Batha, S. H., Grove, J. W., Gittings, M. L., Hsing, W. W., Kares, R. J., and Klare, K. A. Production of enhanced pressure regions due to inhomogeneities in inertial confinement fusion targets. United States: N. p., 2000. Web. doi:10.1063/1.874022.
Goldman, S. R., Barnes, Cris W., Caldwell, S. E., Wilson, D. C., Batha, S. H., Grove, J. W., Gittings, M. L., Hsing, W. W., Kares, R. J., & Klare, K. A. Production of enhanced pressure regions due to inhomogeneities in inertial confinement fusion targets. United States. doi:10.1063/1.874022.
Goldman, S. R., Barnes, Cris W., Caldwell, S. E., Wilson, D. C., Batha, S. H., Grove, J. W., Gittings, M. L., Hsing, W. W., Kares, R. J., and Klare, K. A. Mon . "Production of enhanced pressure regions due to inhomogeneities in inertial confinement fusion targets". United States. doi:10.1063/1.874022.
@article{osti_20216065,
title = {Production of enhanced pressure regions due to inhomogeneities in inertial confinement fusion targets},
author = {Goldman, S. R. and Barnes, Cris W. and Caldwell, S. E. and Wilson, D. C. and Batha, S. H. and Grove, J. W. and Gittings, M. L. and Hsing, W. W. and Kares, R. J. and Klare, K. A.},
abstractNote = {It is shown that regions of enhanced pressure have been produced in targets with indirect radiation drive in planar and cylindrically convergent geometry through the interaction between the flows caused by target inhomogeneities and the main target drive. Design calculations for National Ignition Facility (NIF) [J. A. Paisner et al., Laser Focus World 30, 75 (1994)] targets with beryllium ablators formed by bonded hemi-shells [D. C. Wilson et al., Bull. Am. Phys. Soc. 43, 1667 (1998)] indicate that related behavior produces a seed perturbation in the ablator which can in some cases lead to the suppression of ignition. From simulation and analysis of the NIF problem in the planar geometry analog, a scaling for the perturbation, which should be useful for validation of the behavior with lower energy drive and smaller-scale geometries, is derived. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.874022},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}