Photoelectron emission induced by low temperature hydrogen plasmas
Laulainen, J., Kalvas, T., Koivisto, H., Kronholm, R., & Tarvainen, O. (2018). Photoelectron emission induced by low temperature hydrogen plasmas. In J. Lettry, E. Mahner, B. Marsh, R. Pardo, & R. Scrivens (Eds.), Proceedings of the 17th International Conference on Ion Sources (Article 020001). AIP Publishing. AIP Conference Proceedings, 2011. https://doi.org/10.1063/1.5053243
Published inAIP Conference Proceedings
© AIP Publishing, 2018
Experimental results of low temperature hydrogen plasma induced photoelectron emission measurements comparing two different plasma heating methods are summarized. By exposing the samples to the vacuum ultraviolet radiation of a filament-driven multi-cusp arc discharge ion source and a 2.45 GHz microwave-driven ion source, it has been measured that the total photoelectron emission from various metal surfaces is on the order of 1 A per kW of plasma heating power, which can be increased by a factor of 2–3.5 with a thin layer of alkali metal. The possible effects of the photoelectrons on the plasma sheath structure are studied with a 1D collisionless model extended to include the contribution of photoelectron emission from the surface.
Parent publication ISBN978-0-7354-1727-4
ConferenceInternational Conference on Ion Sources
Is part of publicationProceedings of the 17th International Conference on Ion Sources
Publication in research information system
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Related funder(s)European Commission
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012– 2017 (Nuclear and Accelerator Based Physics Research at JYFL) and European Union’s Horizon 2020 research and innovation programme under grant agreement No. 654002.
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