Volume H/sup -/ ion production experiments at LBL

Journal Article · Wed Feb 29 23:00:00 EST 1984 · AIP Conf. Proc.; (United States)

DOI:https://doi.org/10.1063/1.34396· OSTI ID:5796574

Leung, K N; Ehlers, K W

H/sup -/ ions formed by volume processes have been 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 small magnets at the extraction aperture. An H/sup -/ ion current density of 38 mA/cm/sup 2/ was obtained with a discharge current of approximately 350 A. Different techniques to increase the H/sup -/ ion yield have also been investigated.

• Research Organization: Lawrence Berkeley Laboratory, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5796574
• Report Number(s): CONF-831180-
• Journal Information: AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 111:1; ISSN APCPC
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AUGMENTATION
BEAM PRODUCTION
CHARGED PARTICLES
CURRENT DENSITY
CURRENTS
DATA
ELECTRIC ARCS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC PROBES
ELECTRON DENSITY
ELEMENTS
EXPERIMENTAL DATA
HELIUM IONS
HYDROGEN
INFORMATION
INHIBITION
ION SOURCES
IONS
LANGMUIR PROBE
MAGNETS
NONMETALS
NUMERICAL DATA
OPERATION
PLASMA
PROBES