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Title: Hybrid-drive implosion system for ICF targets

Abstract

Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.

Inventors:
Issue Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
6853079
Patent Number(s):
-US-A6108183
Assignee:
LLNL; EDB-88-182053
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; IMPACT FUSION DRIVERS; DESIGN; ICF DEVICES; INVENTIONS; IONS; LASER IMPLOSIONS; LASER TARGETS; CHARGED PARTICLES; IMPLOSIONS; TARGETS; THERMONUCLEAR DEVICES 700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology

Citation Formats

Mark, J.W.K. Hybrid-drive implosion system for ICF targets. United States: N. p., 1987. Web.
Mark, J.W.K. Hybrid-drive implosion system for ICF targets. United States.
Mark, J.W.K. Wed . "Hybrid-drive implosion system for ICF targets". United States.
@article{osti_6853079,
title = {Hybrid-drive implosion system for ICF targets},
author = {Mark, J.W.K.},
abstractNote = {Hybrid-drive implosion systems for ICF targets are described which permit a significant increase in target gain at fixed total driver energy. The ICF target is compressed in two phases, an initial compression phase and a final peak power phase, with each phase driven by a separate, optimized driver. The targets comprise a hollow spherical ablator surroundingly disposed around fusion fuel. The ablator is first compressed to higher density by a laser system, or by an ion beam system, that in each case is optimized for this initial phase of compression of the target. Then, following compression of the ablator, energy is directly delivered into the compressed ablator by an ion beam driver system that is optimized for this second phase of operation of the target. The fusion fuel is driven, at high gain, to conditions wherein fusion reactions occur. This phase separation allows hydrodynamic efficiency and energy deposition uniformity to be individually optimized, thereby securing significant advantages in energy gain. In additional embodiments, the same or separate drivers supply energy for ICF target implosion. 3 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {10}
}