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Title: Apparatus and method for extracting power from energetic ions produced in nuclear fusion

An apparatus and method of extracting power from energetic ions produced by nuclear fusion in a toroidal plasma to enhance respectively the toroidal plasma current and fusion reactivity. By injecting waves of predetermined frequency and phase traveling substantially in a selected poloidal direction within the plasma, the energetic ions become diffused in energy and space such that the energetic ions lose energy and amplify the waves. The amplified waves are further adapted to travel substantially in a selected toroidal direction to increase preferentially the energy of electrons traveling in one toroidal direction which, in turn, enhances or generates a toroidal plasma current. In an further adaptation, the amplified waves can be made to preferentially increase the energy of fuel ions within the plasma to enhance the fusion reactivity of the fuel ions. The described direct, or in situ, conversion of the energetic ion energy provides an efficient and economical means of delivering power to a fusion reactor.
Inventors:
 [1];  [2]
  1. (Princeton, NJ)
  2. (Paris, FR)
Issue Date:
OSTI Identifier:
869663
Assignee:
United States of America as represented by United States (Washington, DC) PPPL
Patent Number(s):
US 5375149
Contract Number:
AC02-76CH03073
Research Org:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
Country of Publication:
United States
Language:
English
Subject:
apparatus; method; extracting; power; energetic; produced; nuclear; fusion; toroidal; plasma; enhance; respectively; current; reactivity; injecting; waves; predetermined; frequency; phase; traveling; substantially; selected; poloidal; direction; diffused; energy; space; lose; amplify; amplified; adapted; travel; increase; preferentially; electrons; enhances; generates; adaptation; fuel; described; direct; situ; conversion; provides; efficient; economical; means; delivering; reactor; toroidal direction; nuclear fusion; plasma current; toroidal plasma; fusion reactor; predetermined frequency; extracting power; acting power; /376/