Extraction of volume-produced H/sup -/ ions from a multicusp source

Journal Article · Fri Dec 31 23:00:00 EST 1982 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1137215· OSTI ID:6650152

Leung, K N; Ehlers, K W; Bacal, M

H/sup -/ ions formed by volume processes are extracted from a multicusp ion source. It is shown that a permanent magnet filter together with a small positive bias voltage on the plasma grid can produce a very significant reduction in electron drain as well as a sizable increase in H/sup -/ ions available for extraction. A further reduction in electron current is achieved by installing a pair of ceramic magnets at the extraction aperture. The combined arrangement improves the ratio of extracted H/sup -/ ion current to electron current to about unity.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6650152
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 54:1; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ANIONS
CERAMICS
CHARGED PARTICLES
CUSPED GEOMETRIES
DATA
ELECTRODES
ELECTRONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
FILTERS
GRIDS
HYDROGEN IONS
INFORMATION
ION SOURCES
IONS
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETS
NUMERICAL DATA
OPEN CONFIGURATIONS
PERFORMANCE
PERMANENT MAGNETS
PLASMA