Photoelectron emission from metal surfaces induced by VUV-emission of filament driven hydrogen arc discharge plasma

Journal Article · Wed Apr 08 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4916416· OSTI ID:22391398

Laulainen, J.; Kalvas, T.; Koivisto, H.; Komppula, J.; Tarvainen, O. ^[1]

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1. University of Jyväskylä, Department of Physics (Finland)

Photoelectron emission measurements have been performed using a filament-driven multi-cusp arc discharge volume production H{sup −} ion source (LIISA). It has been found that photoelectron currents obtained with Al, Cu, Mo, Ta and stainless steel (SAE 304) are on the same order of magnitude. The photoelectron currents depend linearly on the discharge power. It is shown experimentally that photoelectron emission is significant only in the short wavelength range of hydrogen spectrum due to the energy dependence of the quantum efficiency. It is estimated from the measured data that the maximum photoelectron flux from plasma chamber walls is on the order of 1 A per kW of discharge power.

• OSTI ID: 22391398
• Journal Information: AIP Conference Proceedings, Vol. 1655, Issue 1; Conference: NIBS 2014: 4. International Symposium on Negative Ions, Beams and Sources, Garching (Germany), 6-10 Oct 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
COPPER
ELECTRIC ARCS
EMISSION SPECTRA
ENERGY DEPENDENCE
FAR ULTRAVIOLET RADIATION
FILAMENTS
HYDROGEN
HYDROGEN IONS 1 MINUS
ION SOURCES
MOLYBDENUM
PHOTOELECTRIC EMISSION
PLASMA
QUANTUM EFFICIENCY
STAINLESS STEEL-304
TANTALUM