Intermediate and high-mass ion beams from a 10-cm duopigatron

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Plasma Chem. Plasma Process.; (United States)

DOI:https://doi.org/10.1007/BF00647189· OSTI ID:6765427

Weber, P D; Gilgenbach, R M

Experimental studies of a 10-cm Duopigatron as a source of argon, krypton, and xenon ion beams are reported. Source plasma instabilities are examined, and the mass dependence of oscillation frequencies and instability onset conditions are determined. Arc current and density oscillations are found to be associated with ion acoustic fluctuations with frequencies scaling as 1/M /SUP 1/2/ . Langmuir probe measurements within the source plasma double layer are used to indicate the physical mechanism responsible for the observed large-amplitude arc current shifts. Ion beams have been extracted at energies up to 18kV, and drain currents up to 540 mA for argon, 440 mA for krypton, and 520 mA for xenon have been achieved with source plasma densities in the range 10/sup 11/-10/sup 12/ cm/sup -3/. Excellent agreement with existing theoretical models has been obtained in the mass and density dependence of the extraction current, as well as the voltage at which transition from space-charge limited to ion saturation emission occurs.

• Research Organization: Univ. of Michigan, Ann Arbor, MI
• OSTI ID: 6765427
• Journal Information: Plasma Chem. Plasma Process.; (United States), Journal Name: Plasma Chem. Plasma Process.; (United States) Vol. 4:2; ISSN PCPPD
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ARGON IONS
BEAM CURRENTS
BEAM EXTRACTION
BEAM INJECTION
BEAM INJECTION HEATING
BEAMS
CHARGED PARTICLES
CURRENT DENSITY
CURRENTS
DUOPLASMATRONS
ELECTRON TUBES
ENERGY RANGE
HEATING
INSTABILITY
ION BEAMS
ION SOURCES
IONS
KEV RANGE
KEV RANGE 10-100
KRYPTON IONS
MILLI AMP BEAM CURRENTS
NEUTRAL ATOM BEAM INJECTION
PENNING ION SOURCES
PERFORMANCE
PLASMA DENSITY
PLASMA HEATING
PLASMA INSTABILITY
PLASMATRONS
THERMONUCLEAR DEVICES
XENON IONS