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Title: Method of enhancing cyclotron beam intensity

Abstract

When an easily ionized support gas such as xenon is added to the cold cathode in sources of the Oak Ridge Isochronous Cyclotron, large beam enhancements are produced. For example, .sup.20 Ne.sup.7+ is increased from 0.05 enA to 27 enA, and .sup.16 O.sup.5+ intensities in excess of 35 e.mu.A have been extracted for periods up to 30 minutes. Approximately 0.15 cc/min of the easily ionized support gas is supplied to the ion source through a separate gas feed line and the primary gas flow is reduced by about 30%.

Inventors:
 [1];  [2]
  1. Knoxville, TN
  2. East Lansing, MI
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
862949
Patent Number(s):
4055782
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; enhancing; cyclotron; beam; intensity; easily; ionized; support; gas; xenon; added; cold; cathode; sources; oak; ridge; isochronous; enhancements; produced; example; 20; increased; 05; ena; 27; 16; intensities; excess; 35; extracted; periods; 30; minutes; approximately; 15; cc; supplied; source; separate; feed; line; primary; flow; reduced; feed line; primary gas; gas feed; beam intensity; cold cathode; gas flow; support gas; cyclotron beam; /315/313/

Citation Formats

Hudson, Ed D, and Mallory, Merrit L. Method of enhancing cyclotron beam intensity. United States: N. p., 1977. Web.
Hudson, Ed D, & Mallory, Merrit L. Method of enhancing cyclotron beam intensity. United States.
Hudson, Ed D, and Mallory, Merrit L. Sat . "Method of enhancing cyclotron beam intensity". United States. https://www.osti.gov/servlets/purl/862949.
@article{osti_862949,
title = {Method of enhancing cyclotron beam intensity},
author = {Hudson, Ed D and Mallory, Merrit L},
abstractNote = {When an easily ionized support gas such as xenon is added to the cold cathode in sources of the Oak Ridge Isochronous Cyclotron, large beam enhancements are produced. For example, .sup.20 Ne.sup.7+ is increased from 0.05 enA to 27 enA, and .sup.16 O.sup.5+ intensities in excess of 35 e.mu.A have been extracted for periods up to 30 minutes. Approximately 0.15 cc/min of the easily ionized support gas is supplied to the ion source through a separate gas feed line and the primary gas flow is reduced by about 30%.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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