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Title: Neutral beamline with ion energy recovery based on magnetic blocking of electrons

Abstract

A neutral beamline generator with energy recovery of the full-energy ion ponent of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential level with respect to ground through a neutralizer cell by means of a negative acceleration voltage. The unneutralized full-energy ion component of the beam exiting the neutralizer are retarded and slightly deflected and the electrons in the neutralizer are blocked by a magnetic field generated transverse to the beamline. An electron collector in the form of a coaxial cylinder surrounding and protruding axial a few centimeters beyond the neutralizer exit terminates the electrons which exit the neutralizer in an E x B drift to the collector when the collector is biased a few hundred volts positive with respect to the neutralizer voltage. The neutralizer is operated at the negative acceleration voltage, and the deflected full energy ions are decelerated and the charge collected at ground potential thereby expending none of their energy received from the acceleration power supply.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
864337
Patent Number(s):
4349505
Assignee:
United States of America as represented by Department of Energy (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
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
neutral; beamline; energy; recovery; based; magnetic; blocking; electrons; generator; full-energy; ponent; beam; provided; positive; source; accelerated; desired; slightly; potential; level; respect; ground; neutralizer; cell; means; negative; acceleration; voltage; unneutralized; component; exiting; retarded; deflected; blocked; field; generated; transverse; electron; collector; form; coaxial; cylinder; surrounding; protruding; axial; centimeters; exit; terminates; drift; biased; hundred; volts; operated; decelerated; charge; collected; expending; received; power; supply; charge collected; neutral beamline; neutralizer cell; beam exit; ground potential; magnetic field; power supply; beam energy; neutral beam; energy recovery; field generated; electron collector; negative acceleration; desired beam; acceleration voltage; beam exiting; positive potential; energy received; hundred volts; beamline generator; magnetic blocking; /376/250/976/

Citation Formats

Stirling, William L. Neutral beamline with ion energy recovery based on magnetic blocking of electrons. United States: N. p., 1982. Web.
Stirling, William L. Neutral beamline with ion energy recovery based on magnetic blocking of electrons. United States.
Stirling, William L. Fri . "Neutral beamline with ion energy recovery based on magnetic blocking of electrons". United States. https://www.osti.gov/servlets/purl/864337.
@article{osti_864337,
title = {Neutral beamline with ion energy recovery based on magnetic blocking of electrons},
author = {Stirling, William L},
abstractNote = {A neutral beamline generator with energy recovery of the full-energy ion ponent of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential level with respect to ground through a neutralizer cell by means of a negative acceleration voltage. The unneutralized full-energy ion component of the beam exiting the neutralizer are retarded and slightly deflected and the electrons in the neutralizer are blocked by a magnetic field generated transverse to the beamline. An electron collector in the form of a coaxial cylinder surrounding and protruding axial a few centimeters beyond the neutralizer exit terminates the electrons which exit the neutralizer in an E x B drift to the collector when the collector is biased a few hundred volts positive with respect to the neutralizer voltage. The neutralizer is operated at the negative acceleration voltage, and the deflected full energy ions are decelerated and the charge collected at ground potential thereby expending none of their energy received from the acceleration power supply.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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