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3-D study of radiation symmetrization in some indirectly driven heavy ion ICF targets

Technical Report:

Abstract

Symmetrization of the radiation field inside hohlraum targets for indirectly driven heavy ion beam inertial confinement fusion (ICF) is investigated numerically. The considered targets consist of a casing, enclosing the spherical fuel capsule, and a few cylindrical radiators, schematically representing ion beam irradiated converters. Radiation absorption and remission is dealt with as in the paper by Murakami and Meyer-ter-Vehn, but with the geometry extended to 3-D, and with consideration for the finite size of the radiators. It is found that, for practical casing-to-capsule area ratios (of the order of 10) and converter aspect ratios, two converters cannot provide the uniformity required for ICF. A spherical casing with six converters (placed in couples along the axes of a cartesian coordinate system) could instead illuminate a capsule with non-uniformity well below 2%, which could satisfy the ICF requirements. The effects of changing the area ratio, the size and position of the converters and the geometry of hohlraum are also discussed.
Publication Date:
Dec 31, 1991
Product Type:
Technical Report
Report Number:
ETDE-IT-93-23
Reference Number:
SCA: 700411; PA: ITAN-93:000042; SN: 93000925451
Resource Relation:
Other Information: PBD: 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ION BEAM TARGETS; RADIATION QUALITY; HEAVY ION FUSION REACTIONS; HEAVY IONS; CAPSULES; COVERINGS; GEOMETRY; THREE-DIMENSIONAL CALCULATIONS; INERTIAL CONFINEMENT; SYMMETRY; ENERGY ABSORPTION; 700411; INERTIAL CONFINEMENT DEVICES
OSTI ID:
10117177
Research Organizations:
ENEA, Frascati (Italy)
Country of Origin:
Italy
Language:
English
Other Identifying Numbers:
Other: ON: DE93758937; TRN: 93:000042
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
ITAN
Size:
35 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Temporal, M, and Atzeni, S. 3-D study of radiation symmetrization in some indirectly driven heavy ion ICF targets. Italy: N. p., 1991. Web.
Temporal, M, & Atzeni, S. 3-D study of radiation symmetrization in some indirectly driven heavy ion ICF targets. Italy.
Temporal, M, and Atzeni, S. 1991. "3-D study of radiation symmetrization in some indirectly driven heavy ion ICF targets." Italy.
@misc{etde_10117177,
title = {3-D study of radiation symmetrization in some indirectly driven heavy ion ICF targets}
author = {Temporal, M, and Atzeni, S}
abstractNote = {Symmetrization of the radiation field inside hohlraum targets for indirectly driven heavy ion beam inertial confinement fusion (ICF) is investigated numerically. The considered targets consist of a casing, enclosing the spherical fuel capsule, and a few cylindrical radiators, schematically representing ion beam irradiated converters. Radiation absorption and remission is dealt with as in the paper by Murakami and Meyer-ter-Vehn, but with the geometry extended to 3-D, and with consideration for the finite size of the radiators. It is found that, for practical casing-to-capsule area ratios (of the order of 10) and converter aspect ratios, two converters cannot provide the uniformity required for ICF. A spherical casing with six converters (placed in couples along the axes of a cartesian coordinate system) could instead illuminate a capsule with non-uniformity well below 2%, which could satisfy the ICF requirements. The effects of changing the area ratio, the size and position of the converters and the geometry of hohlraum are also discussed.}
place = {Italy}
year = {1991}
month = {Dec}
}