Thermionic Emission and a Novel Electron Collector in a Liquid Helium Environment

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Thermionic Emission and a Novel Electron Collector in a Liquid Helium Environment

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Title: Thermionic Emission and a Novel Electron Collector in a Liquid Helium Environment
Author: Fang, Jieping; Dementyev, Anatoly E.; Tempere, Jacques; Silvera, Isaac F.

Note: Order does not necessarily reflect citation order of authors.

Citation: Fang, Jieping, Anatoly E. Dementyev, Jacques Tempere, and Isaac F. Silvera. 2009. Thermionic emission and a novel electron collector in a liquid helium environment. Review of Scientific Instruments 80(4): 043901.
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Abstract: We study two techniques to create electrons in a liquid helium environment. One is thermionic emission of tungsten filaments in a low temperature cell in the vapor phase with a superfluid helium film covering all surfaces; the other is operating a glowing filament immersed in bulk liquid helium. We present both the steady state and rapid sweep I-V curves and the electron current yield. These curves, having a negative dynamic resistance region, differ remarkably from those of a vacuum tube filament. A novel low temperature vapor-phase electron collector for which the insulating helium film on the collector surface can be removed is used to measure emission current. We also discuss our achievement of producing multielectron bubbles in liquid helium by a new method.
Published Version: doi:10.1063/1.3103944
Other Sources: http://arxiv.org/abs/0811.0334
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:8944743

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  • FAS Scholarly Articles [7470]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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