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Title: Microwave electron cyclotron electron resonance (ECR) ion source with a large, uniformly distributed, axially symmetric, ECR plasma volume

An electron cyclotron resonance (ECR) ion source includes a primary mirror coil disposed coaxially around a vacuum vessel in which a plasma is induced and introducing a solenoidal ECR-producing field throughout the length of the vacuum vessel. Radial plasma confinement is provided by a multi-cusp, multi-polar permanent magnet array disposed azimuthally around the vessel and within the primary mirror coil. Axial confinement is provided either by multi-cusp permanent magnets at the opposite axial ends of the vessel, or by secondary mirror coils disposed on opposite sides of the primary coil.
Inventors:
 [1]
  1. (Kingston, TN)
Issue Date:
OSTI Identifier:
870373
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5506475
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
microwave; electron; cyclotron; resonance; ecr; source; uniformly; distributed; axially; symmetric; plasma; volume; primary; mirror; coil; disposed; coaxially; vacuum; vessel; induced; introducing; solenoidal; ecr-producing; field; throughout; length; radial; confinement; provided; multi-cusp; multi-polar; permanent; magnet; array; azimuthally; axial; magnets; opposite; secondary; coils; uniformly distribute; ecr plasma; primary mirror; electron cyclotron; vacuum vessel; permanent magnet; permanent magnets; uniformly distributed; plasma confinement; cyclotron resonance; axially symmetric; plasma volume; mirror coil; secondary mirror; disposed coaxially; coils disposed; coil disposed; microwave electron; mirror coils; field throughout; /315/