Vacuum-sealed field emission electron gun
| Autor: | Christian Prommesberger, Rupert Schreiner, Christoph Langer, Andreas Pahlke, Robert Ławrowski, Florian Dams, Natuski Miyakawa, Simon Edler, Michael Bachmann, Lukas Bergbreiter, Florian Herdl, Felix Düsberg, Tobias Eggert, Matthias Hausladen |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Field (physics) business.industry Continuous operation Process Chemistry and Technology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Field electron emission Materials Chemistry Optoelectronics Pyrolytic carbon Electrical and Electronic Engineering business Instrumentation Common emitter Electron gun Voltage Ambient pressure |
| Zdroj: | Journal of Vacuum Science & Technology B. 38:023203 |
| ISSN: | 2166-2754 2166-2746 |
| Popis: | A compact vacuum-sealed field emission electron gun with an operation voltage below 5 kV is presented. With a 150 nm thick pyrolytic carbon membrane, a transmission of 40% at 5 kV is obtained. For more than 2500 h of continuous operation at an emission current of 100 nA, no significant increase ( < 50 V) and almost no degradation were found. From this measurement, a lifetime of more than 10 000 h at continuous operation with approximately a linear increase of the extraction voltage from about 545 V to about 730 V is predicted. This electron source enables application of field emitter arrays in poor vacuum or even ambient pressure. |
| Databáze: | OpenAIRE |
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