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Characteristics of a small multicusp H/sup -/ source

Conference ·
OSTI ID:6919771
; ; ;
It is shown that the H/sup -/ current extracted from a magnetically filtered multicusp source can be enhanced by optimizing the extraction chamber length, by employing the proper chamber wall material, by mixing hydrogen with xenon gases in the discharge and by injecting very low energy electrons into the filter and extraction regions. A large improvement in H/sup -/ yield can be achieved by using a multicusp source with a much reduced plasma volume. In this arrangement, H/sup -/ current densities as high as 240 mA/cm/sup 2/ have been obtained from a 1-mm-diam extraction aperture.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6919771
Report Number(s):
LBL-22385; CONF-8610115-13; ON: DE87003537
Country of Publication:
United States
Language:
English

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Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ANIONS
BEAM CURRENTS
BEAMS
CHARGED PARTICLES
CURRENTS
CUSPED GEOMETRIES
ELECTRON BEAMS
ELEMENTS
FLUIDS
GASES
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION SOURCES
IONS
LEPTON BEAMS
MAGNETIC FIELD CONFIGURATIONS
NONMETALS
OPEN CONFIGURATIONS
OPTIMIZATION
PARTICLE BEAMS
RARE GASES
XENON