Control of impurities in toroidal plasma devices

Ohkawa, Tihiro

Title: Control of impurities in toroidal plasma devices

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Abstract

A method and apparatus for plasma impurity control in closed flux plasma systems such as Tokamak reactors is disclosed. Local axisymmetrical injection of hydrogen gas is employed to reverse the normally inward flow of impurities into the plasma.

Inventors:

Ohkawa, Tihiro ^[1]

La Jolla, CA

Issue Date:: 1980-01-01

Research Org.:: General Atomics, San Diego, CA (United States)

OSTI Identifier:: 863747

Patent Number(s):: 4239594

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/10 - Fusion reactors

G - PHYSICS G21 - NUCLEAR PHYSICS G21B - FUSION REACTORS
G21B1/057 - {Tokamaks}

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DOE Contract Number:: EY-76-C-03-0167

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: control; impurities; toroidal; plasma; devices; method; apparatus; impurity; closed; flux; systems; tokamak; reactors; disclosed; local; axisymmetrical; injection; hydrogen; gas; employed; reverse; normally; inward; flow; plasma devices; toroidal plasma; hydrogen gas; plasma device; impurity control; plasma systems; /376/173/

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                    Ohkawa, Tihiro. Control of impurities in toroidal plasma devices.  United States: N. p., 1980. 
        Web.

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                    Ohkawa, Tihiro. Control of impurities in toroidal plasma devices.  United States.

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                    Ohkawa, Tihiro. Tue .  
        "Control of impurities in toroidal plasma devices".  United States.  https://www.osti.gov/servlets/purl/863747.

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@article{osti_863747,

  title        = {Control of impurities in toroidal plasma devices},

  author       = {Ohkawa, Tihiro},

  abstractNote = {A method and apparatus for plasma impurity control in closed flux plasma systems such as Tokamak reactors is disclosed. Local axisymmetrical injection of hydrogen gas is employed to reverse the normally inward flow of impurities into the plasma.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1980},

  month        = {1}

}

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