Characteristics of a sheet plasma and its application to a large extraction area negative ion source
Conference
·
· Review of Scientific Instruments; (USA)
OSTI ID:6914439
- Department of Electronics, Doshisha University, Kyoto, Japan (JP)
- Institute of Plasma Physics, Nagoya University, Nagoya, (Japan)
A sheet plasma with a thickness as thin as several millimeters was produced by the combination of a pair of dipole magnetic fields and a mirror magnetic field. The negative hydrogen ion produced in the peripheral region of the sheet plasma was measured with a movable Faraday cup. The maximum negative ion current was observed when the extraction electrode of the Faraday cup was biased slightly negative with respect to the plasma potential. The optimum position for the negative ion extraction appeared to be 2 to 3 cm from the center of the sheet plasma. A large concentration of high-energy electrons was found inside of the sheet plasma. The measured negative ion current showed a dependence on the density of high-energy electrons in the sheet plasma.
- OSTI ID:
- 6914439
- Report Number(s):
- CONF-890703--
- Conference Information:
- Journal Name: Review of Scientific Instruments; (USA) Journal Volume: 61:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
43 PARTICLE ACCELERATORS
430301 -- Particle Accelerators-- Ion Sources
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
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BEAM MONITORS
CHARGED PARTICLES
ELECTRIC DISCHARGES
ELECTRODES
ELECTRON TEMPERATURE
ELECTRONS
ELEMENTARY PARTICLES
FARADAY CUPS
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HYDROGEN IONS
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LEPTONS
MAGNETIC FIELDS
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430301 -- Particle Accelerators-- Ion Sources
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
BEAM MONITORS
CHARGED PARTICLES
ELECTRIC DISCHARGES
ELECTRODES
ELECTRON TEMPERATURE
ELECTRONS
ELEMENTARY PARTICLES
FARADAY CUPS
FERMIONS
HYDROGEN IONS
IONS
LEPTONS
MAGNETIC FIELDS
MAGNETIC MIRRORS
MEASURING INSTRUMENTS
MONITORS
OPEN PLASMA DEVICES
PLASMA PRODUCTION
THERMONUCLEAR DEVICES