Schottky-Emitter_01.jpg
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Summary
| Description |
Deutsch
:
Schottky Emitter bei zunehmender Vergrößerung. Der Wolfram-Einkristall mit geätzter Spitze ist auf einem Wolfram-Filament befestigt und mit einer Manschette aus
Zirconiumdioxid
versehen. Dieses sorgt bei der hohen Arbeitstemperatur von ca. 1800 K für einen leichteren Elektronenaustritt aus der Spitze.
English
:
Schottky emitter at increasing magnification. The tungsten single crystal with an etched tip is attached to a tungsten filament and provided with a sleeve made of
zirconium dioxide
. At the high working temperature of approx. 1800 K, this ensures easier electron discharge from the tip.
[1]
Français
:
Émetteur dʼ
électrons
à
effet Schottky
, vu à des
grossissements
successivement plus grands. Le
monocristal
de
tungstène
à pointe gravée chimiquement est fixé sur un filament, en
tungstène
également, et pourvu dʼun manchon en
dioxyde de zirconium
, ce qui facilite lʼextraction des
électrons
de la pointe à la température de travail dʼenviron 1800 K.
|
| Date | |
| Source | Own work |
| Author | ErwinMeier |
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- ↑ Bronsgeest, Merijntje:Physics of Schottky electron sources: Theory and optimum operation, ISBN 978-90-8570-434-8