Intense steady state electron beam generator

Hershcovitch, Ady; Kovarik, Vincent J; Prelec, Krsto

Title: Intense steady state electron beam generator

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Abstract

An intense, steady state, low emittance electron beam generator is formed by operating a hollow cathode discharge plasma source at critical levels in combination with an extraction electrode and a target electrode that are operable to extract a beam of fast primary electrons from the plasma source through a negatively biased grid that is critically operated to repel bulk electrons toward the plasma source while allowing the fast primary electrons to move toward the target in the desired beam that can be successfully transported for relatively large distances, such as one or more meters away from the plasma source.

Inventors:

Hershcovitch, Ady ^[1]; Kovarik, Vincent J ^[2]; Prelec, Krsto ^[3]

Mount Sinai, NY
Bohemia, NY
Setauket, NY

Issue Date:: 1990-01-01

Research Org.:: Associated Universities, Inc., Upton, NY (United States)

OSTI Identifier:: 867464

Patent Number(s):: 4942339

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

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J3/025 - {Electron guns using a discharge in a gas or a vapour as electron source
H01J37/077 - Electron guns using discharge in gases or vapours as electron sources

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DOE Contract Number:: AC02-76CH00016

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: intense; steady; electron; beam; generator; emittance; formed; operating; hollow; cathode; discharge; plasma; source; critical; levels; combination; extraction; electrode; target; operable; extract; fast; primary; electrons; negatively; biased; grid; critically; operated; repel; bulk; allowing; move; desired; successfully; transported; relatively; distances; meters; beam generator; hollow cathode; plasma source; electron beam; discharge plasma; target electrode; negatively biased; desired beam; cathode discharge; extraction electrode; primary electron; critical levels; /315/250/313/

Citation Formats


                    Hershcovitch, Ady, Kovarik, Vincent J, and Prelec, Krsto. Intense steady state electron beam generator.  United States: N. p., 1990. 
        Web.

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                    Hershcovitch, Ady, Kovarik, Vincent J, & Prelec, Krsto. Intense steady state electron beam generator.  United States.

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                    Hershcovitch, Ady, Kovarik, Vincent J, and Prelec, Krsto. Mon .  
        "Intense steady state electron beam generator".  United States.  https://www.osti.gov/servlets/purl/867464.

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@article{osti_867464,

  title        = {Intense steady state electron beam generator},

  author       = {Hershcovitch, Ady and Kovarik, Vincent J and Prelec, Krsto},

  abstractNote = {An intense, steady state, low emittance electron beam generator is formed by operating a hollow cathode discharge plasma source at critical levels in combination with an extraction electrode and a target electrode that are operable to extract a beam of fast primary electrons from the plasma source through a negatively biased grid that is critically operated to repel bulk electrons toward the plasma source while allowing the fast primary electrons to move toward the target in the desired beam that can be successfully transported for relatively large distances, such as one or more meters away from the plasma source.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {1}

}

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