Low-energy, high-current, ion source with cold electron emitter

Journal Article · Wed Feb 15 04:00:00 EST 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3653870· OSTI ID:22072249

Vizir, A V; Oks, E M ^[1]; Shandrikov, M V; Yushkov, G Yu ^[1]

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1. High Current Electronics Institute, Russian Academy of Sciences, Tomsk 634055 (Russian Federation)

An ion source based on a two-stage discharge with electron injection from a cold emitter is presented. The first stage is the emitter itself, and the second stage provides acceleration of injected electrons for gas ionization and formation of ion flow (<20 eV, 5 A dc). The ion accelerating system is gridless; acceleration is accomplished by an electric field in the discharge plasma within an axially symmetric, diverging, magnetic field. The hollow cathode electron emitter utilizes an arc discharge with cathode spots hidden inside the cathode cavity. Selection of the appropriate emitter material provides a very low erosion rate and long lifetime.

• OSTI ID: 22072249
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
AXIAL SYMMETRY
ELECTRIC FIELDS
ELECTRON BEAM INJECTION
ELECTRON EMISSION
ELECTRONS
EV RANGE
HOLLOW CATHODES
ION SOURCES
IONIZATION
MAGNETIC FIELDS
PLASMA