skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Hybrid-drive implosion system for ICF targets

Abstract

Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) 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 (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), 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 (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) 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.

Inventors:
 [1]
  1. (Danville, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
875213
Patent Number(s):
H508
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
hybrid-drive; implosion; icf; targets; systems; 20; 40; 10; 22; 42; described; permit; significant; increase; target; fixed; total; driver; energy; compressed; phases; initial; compression; phase; final; peak; power; driven; separate; optimized; comprise; hollow; spherical; ablator; 12; surroundingly; disposed; fusion; fuel; 14; density; laser; 24; beam; 44; following; directly; delivered; 30; 48; operation; conditions; reactions; occur; separation; allows; hydrodynamic; efficiency; deposition; uniformity; individually; securing; advantages; additional; embodiments; drivers; supply; significant increase; significant advantages; phase separation; hollow spherical; peak power; energy deposition; significant advantage; power phase; fusion fuel; fusion reaction; icf target; icf targets; reactions occur; fusion reactions; surroundingly disposed; hybrid-drive implosion; targets comprise; /376/

Citation Formats

Mark, James W. Hybrid-drive implosion system for ICF targets. United States: N. p., 1988. Web.
Mark, James W. Hybrid-drive implosion system for ICF targets. United States.
Mark, James W. Fri . "Hybrid-drive implosion system for ICF targets". United States. https://www.osti.gov/servlets/purl/875213.
@article{osti_875213,
title = {Hybrid-drive implosion system for ICF targets},
author = {Mark, James W.},
abstractNote = {Hybrid-drive implosion systems (20,40) for ICF targets (10,22,42) 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 (12) surroundingly disposed around fusion fuel (14). The ablator is first compressed to higher density by a laser system (24), or by an ion beam system (44), 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 (30,48) that is optimized for this second phase of operation of the target. The fusion fuel (14) 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Patent:

Save / Share: