Directly heated lanthanum hexaboride filaments

Journal Article · Sun Jul 01 00:00:00 EDT 1984 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1137902· OSTI ID:6682516

Leung, K N; Pincosy, P A; Ehlers, K W

Some physical properties of lanthanum hexaboride filaments, when operated as cathodes in a gas discharge, are presented. These directly heated hairpin-shaped filaments have been tested in different types of ion sources and are shown to be capable of long-pulse or cw discharge operations. The design of a shaped lanthanum hexaboride filament for the purpose of further extension of lifetime is also described.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6682516
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 55:7; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
BORIDES
BORON COMPOUNDS
CATHODES
CONFIGURATION
DESIGN
ELECTRIC DISCHARGES
ELECTRIC HEATING
ELECTRODES
FILAMENTS
FLUIDS
FUNCTIONS
GASES
HEATING
ION SOURCES
JOULE HEATING
LANTHANUM BORIDES
LANTHANUM COMPOUNDS
MELTING POINTS
OPERATION
PHYSICAL PROPERTIES
PLASMA HEATING
RARE EARTH COMPOUNDS
RESISTANCE HEATING
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WORK FUNCTIONS