Publication
Title
Thermionic emission and a novel electron collector in a liquid helium environment
Author
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.
Language
English
Source (journal)
The review of scientific instruments. - New York, N.Y.
Publication
New York, N.Y. : 2009
ISSN
0034-6748
Volume/pages
80:4(2009), p. 043901,1-043901,8
ISI
000266597100026
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
E-info
Web of Science
Record
Identification
Creation 06.04.2009
Last edited 17.06.2017
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