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

Autor:	J. W. Grove, B. R. Thomas, R. J. Kares, George A. Kyrala, M. L. Gittings, Mark D. Wilke, S. E. Caldwell, Melissa Edwards, W. W. Hsing, S. R. Goldman, K. A. Klare, Cris W. Barnes, A. M. Dunne, R. P. Weaver, Steven H. Batha, R. W. Margevicius, P. Graham, Doug Wilson
Rok vydání:	2000
Předmět:	Physics chemistry.chemical_element Atmospheric-pressure plasma Condensed Matter Physics Computational physics law.invention Ignition system Planar chemistry Physics::Plasma Physics law Plasma diagnostics Atomic physics Beryllium National Ignition Facility Scaling Inertial confinement fusion
Zdroj:	Physics of Plasmas. 7:2007-2013
ISSN:	1089-7674 1070-664X
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fec388073a4dff8dda9d591527990edb https://doi.org/10.1063/1.874022 Zobrazit plný text záznamu