Lifetime of hydrogenated composite cathodes in a vacuum arc ion source

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4932382· OSTI ID:22482906

Frolova, V. P.; Nikolaev, A. G.; Yushkov, G. Yu. ^[1]; Oks, E. M. ^[1]; Barengolts, S. A. ^[2]

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1. Institute of High Current Electronics SB RAS, Tomsk 634055 (Russian Federation)
2. Prokhorov General Physics Institute RAS, Moscow 119991 (Russian Federation)

The paper reports on a study of the mass-charge state of the plasma produced in a vacuum arc discharge with composite cathodes which were copper-disk coated with a hydrogenated Zr film of thicknesses 9, 22, and 35 μm. The cathodes allow the generation of multicomponent gas and metal ion beams with a hydrogen ion content from several to several tens of percent. Also investigated is the dependence of the H ion fraction in a beam on the Zr film thickness during erosion to the point of disappearance of Zr peaks in mass-charge spectra. The ability of the vacuum arc system to produce H ions is analyzed by analyzing the cathode lifetime as a function of the film thickness and pulse repetition frequency.

• OSTI ID: 22482906
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CATHODES
CHARGE STATES
COPPER
EROSION
FILMS
HYDROGEN IONS
HYDROGENATION
ION BEAMS
LIFETIME
MASS
PLASMA
PULSES
SPECTRA
THICKNESS