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Title: Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions

Abstract

A high concentration of positive molecular ions of hydrogen or deuterium gas is extracted from a positive ion source having a short path length of extracted ions, relative to the mean free path of the gas molecules, to minimize the production of other ion species by collision between the positive ions and gas molecules. The ion source has arrays of permanent magnets to produce a multi-cusp magnetic field in regions remote from the plasma grid and the electron emitters, for largely confining the plasma to the space therebetween. The ion source has a chamber which is short in length, relative to its transverse dimensions, and the electron emitters are at an even shorter distance from the plasma grid, which contains one or more extraction apertures.

Inventors:
 [1];  [2]
  1. Alamo, CA
  2. Hercules, CA
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
866805
Patent Number(s):
4793961
Assignee:
United States of America as represented by Department of Energy (Washington, DC)
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; source; producing; concentration; positively; charged; molecular; hydrogen; deuterium; positive; gas; extracted; path; length; relative; mean; free; molecules; minimize; production; species; collision; arrays; permanent; magnets; produce; multi-cusp; magnetic; field; regions; remote; plasma; grid; electron; emitters; confining; space; therebetween; chamber; transverse; dimensions; shorter; distance; contains; extraction; apertures; positively charged; molecular hydrogen; free path; mean free; electron emitter; gas molecules; path length; permanent magnet; magnetic field; permanent magnets; space therebetween; /376/250/313/315/

Citation Formats

Ehlers, Kenneth W, and Leung, Ka-Ngo. Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions. United States: N. p., 1988. Web.
Ehlers, Kenneth W, & Leung, Ka-Ngo. Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions. United States.
Ehlers, Kenneth W, and Leung, Ka-Ngo. Fri . "Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions". United States. https://www.osti.gov/servlets/purl/866805.
@article{osti_866805,
title = {Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions},
author = {Ehlers, Kenneth W and Leung, Ka-Ngo},
abstractNote = {A high concentration of positive molecular ions of hydrogen or deuterium gas is extracted from a positive ion source having a short path length of extracted ions, relative to the mean free path of the gas molecules, to minimize the production of other ion species by collision between the positive ions and gas molecules. The ion source has arrays of permanent magnets to produce a multi-cusp magnetic field in regions remote from the plasma grid and the electron emitters, for largely confining the plasma to the space therebetween. The ion source has a chamber which is short in length, relative to its transverse dimensions, and the electron emitters are at an even shorter distance from the plasma grid, which contains one or more extraction apertures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Patent:

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