H sup minus enhancement process in a multicusp ion source operated with a barium insert structure

Journal Article · Mon Apr 08 04:00:00 EDT 1991 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.105199· OSTI ID:5847611

Leung, K N; van Os, C F.A.; Kunkel, W B ^[1]

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1. Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 (US)

It has been demonstrated that the H{sup {minus}} output current from a small multicusp source can be substantially enhanced if the hydrogen plasma is seeded with barium. Operating with a barium washer insert at the extraction aperture, it is found that the extractable H{sup {minus}} current is increased by a factor of 3 if the insert bias potential is optimized. By use of a mixture of xenon and hydrogen gas, it is further demonstrated that the positive hydrogen ions are responsible for the observed H{sup {minus}} enhancement.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5847611
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:14; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METALS
ANIONS
BARIUM
CHARGED PARTICLES
ELEMENTS
FUNCTIONS
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION SOURCES
IONS
METALS
OPERATION
PERFORMANCE
PLASMA
WORK FUNCTIONS