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Symmetry and stability issues in target design for heavy ion fusion

Abstract

Results on several topics concerning the symmetry and the stability of the implosion of heavy ion fusion inertial confinement fusion (ICF) targets are reported. By means of 2-D radiation-hydrodynamics simulations, it is shown that some direct-drive targets are subjected, during acceleration, to rather violent Rayleigh-Taylor instabilities. Radiation generation, confinement and symmetrization in some hohlraum targets for indirect-drive ICF, including cylindrical radiation converters is studied by 2-D and 3-D codes. It appears that at least six converters are needed to provide adequate radiation symmetrization and efficient radiation coupling to the fusion capsule. A new concept of radiation driven targets, including a spherically symmetric converter is presented. In the final section, some results are given on high resolution 2-D studies of the turbolent mixing induced by the Rayleigh-Taylor instability.
Publication Date:
Dec 31, 1992
Product Type:
Technical Report
Report Number:
ETDE-IT-93-29; CONF-9209290-2
Reference Number:
SCA: 700411; PA: ITAN-93:000075; SN: 93000925456
Resource Relation:
Conference: 14. international conference on plasma physics and controlled nuclear fusion research,Wurzburg (Germany),30 Sep - 7 Oct 1992; Other Information: PBD: 1992
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ION BEAM TARGETS; SYMMETRY; RAYLEIGH-TAYLOR INSTABILITY; DESIGN; HEAVY ION FUSION REACTIONS; HEAVY ION ACCELERATORS; IMPLOSIONS; EXPERIMENTAL DATA; TWO-DIMENSIONAL CALCULATIONS; TURBULENCE; 700411; INERTIAL CONFINEMENT DEVICES
OSTI ID:
10118494
Research Organizations:
ENEA, Frascati (Italy). Centro Ricerche Energia; Istituto Nazionale di Fisica Nucleare, Legnaro (Italy)
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Other: ON: DE93758942; TRN: 93:000075
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
ITAN
Size:
7 p.
Announcement Date:
Jun 30, 2005

Citation Formats

Atzeni, S, Guerrieri, A, Piriz, A R, and Temporal, M. Symmetry and stability issues in target design for heavy ion fusion. Italy: N. p., 1992. Web.
Atzeni, S, Guerrieri, A, Piriz, A R, & Temporal, M. Symmetry and stability issues in target design for heavy ion fusion. Italy.
Atzeni, S, Guerrieri, A, Piriz, A R, and Temporal, M. 1992. "Symmetry and stability issues in target design for heavy ion fusion." Italy.
@misc{etde_10118494,
title = {Symmetry and stability issues in target design for heavy ion fusion}
author = {Atzeni, S, Guerrieri, A, Piriz, A R, and Temporal, M}
abstractNote = {Results on several topics concerning the symmetry and the stability of the implosion of heavy ion fusion inertial confinement fusion (ICF) targets are reported. By means of 2-D radiation-hydrodynamics simulations, it is shown that some direct-drive targets are subjected, during acceleration, to rather violent Rayleigh-Taylor instabilities. Radiation generation, confinement and symmetrization in some hohlraum targets for indirect-drive ICF, including cylindrical radiation converters is studied by 2-D and 3-D codes. It appears that at least six converters are needed to provide adequate radiation symmetrization and efficient radiation coupling to the fusion capsule. A new concept of radiation driven targets, including a spherically symmetric converter is presented. In the final section, some results are given on high resolution 2-D studies of the turbolent mixing induced by the Rayleigh-Taylor instability.}
place = {Italy}
year = {1992}
month = {Dec}
}