Generation of an intense metal-ion beam by a pulsed ion diode

Conference · Mon Jan 01 04:00:00 EST 1990 · Review of Scientific Instruments; (USA)

OSTI ID:6996957

Nakagawa, Y; Ariyoshi, T ^[1]

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1. Department of Electrical Engineering, Faculty of Engineering, Osaka City University, Osaka 558, Japan (JP)

Intense pulsed metal-ion beams ({similar to}100 keV, {similar to}1 kA, 0.5 {mu}s, Pb and Cu) were generated by a pulsed magnetically insulated ion diode driven by a long-pulse Marx generator. The ion current density exceeded the Child--Langmuir value by a factor of 50. The ion beams were extracted from either an anode plasma produced by electron bombardment on a metal anode or by a vacuum-arc metal-plasma source. Metal-ion beams rich in high-energy multi-ionized ions and also impurity ions of H{sup +}, C{sup +}, and O{sup +} were measured by a Thomson-parabola ion spectrometer and a magnetic mass analyzer. The amount of impurity ions were reduced by conditioning of the anode surface. A design was considered to develop an intense metal-ion source with a total ion current of 1 kA, an ion energy of 100--200 keV, a pulse width of 10 {mu}s, and repetition rate of 10 Hz, all of which correspond to a 100 mA steady-state metal-ion beam.

• OSTI ID: 6996957
• 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

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM CURRENTS
BEAM PRODUCTION
BEAMS
CARBON IONS
CHARGED PARTICLES
CURRENTS
ELEMENTS
HYDROGEN IONS
IMPURITIES
ION BEAMS
IONS
MEASURING INSTRUMENTS
METALS
OXYGEN IONS
PERFORMANCE
SPECTROMETERS