Review of negative ion source technology

Conference · Thu Dec 01 00:00:00 EST 1983

OSTI ID:5116976

Leung, K N

H/sup -/ or D/sup -/ ions are required for generating high energy neutral beams in heating fusion plasmas. Two distinct types of H/sup -/ ion sources can be identified: (1) surface sources - in which the H/sup -/ ions are generated by particle collisions with low work function metal surfaces; and (2) volume sources - in which the H/sup -/ ions are produced by electron-molecules and electron-ion collision processes in the volume of a hydrogen discharge. Recent experiments demonstrate that reasonable H/sup -/ ion current density can be obtained from both types of sources. However, further technology must be developed on the control of cesium and the reduction of electron drain before these sources become practical units of a multi-ampere neutral beam injection system.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5116976
• Report Number(s): LBL-17017; CONF-831203-113; ON: DE84006769
• Resource Relation: Conference: 10. symposium on fusion engineering, Philadelphia, PA, USA, 5 Dec 1983; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ION SOURCES
REVIEWS
TECHNOLOGY ASSESSMENT
IONS
NEGATIVE ENERGY STATES
DEUTERIUM IONS
ELECTRON BEAM ION SOURCES
HYDROGEN IONS 1 MINUS
PLASMA
SURFACE IONIZATION
VOLUME
ANIONS
CHARGED PARTICLES
DOCUMENT TYPES
ENERGY LEVELS
HYDROGEN IONS
IONIZATION
700205* - Fusion Power Plant Technology- Fuel
Heating
& Injection Systems