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Control of the electron source current

  • A control circuit to stabilize the flux of electrons transmitted through an extractor electrode is presented. By controlling the emission current a fluctuation with a standard deviation of 0.015% is observed. However, the achievable stability of the transmitted electron current is limited due to a variation of the extraction grid current ratio showing a standard deviation of 4.33%. By regulating the difference of the emission current and the extraction grid current an improved stability of the transmitted electron current down to a standard deviation of 0.280% is observed. Even with operation at 2 × 10 -5 mbar a standard deviation of 0.558% is achieved.

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Metadaten
Author:Michael BachmannORCiD, Florian Dams, Felix Düsberg, Martin Hofmann, Andreas Pahlke, Christoph LangerORCiD, Robert Damian ŁawrowskiORCiD, Christian PrommesbergerORCiD, Rupert SchreinerORCiDGND
DOI:https://doi.org/10.1109/IVNC.2017.8051550
Parent Title (German):International Vacuum Nanoelectronics Conference (IVNC), 30th, 2017, Regensburg
Publisher:IEEE
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2017
Release Date:2021/05/27
Tag:Circuit stability; Current measurement; Electron sources; Power system stability; Stability analysis; Standards; Voltage measurement
First Page:66
Last Page:67
Institutes:Fakultät Angewandte Natur- und Kulturwissenschaften
Fakultät Angewandte Natur- und Kulturwissenschaften / Labor Mikrosensorik
Begutachtungsstatus:peer-reviewed
research focus:Sensorik