Fabrication and characterization of cesium-based photocathodes for free electron lasers
| Autor: | Patrick G. O'Shea, Saara A. Khan, Eric Montgomery, Blake Riddick |
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| Rok vydání: | 2012 |
| Předmět: |
Free electron model
Fabrication Materials science business.industry Process Chemistry and Technology chemistry.chemical_element Nanotechnology Substrate (electronics) Tungsten Laser Cathode Surfaces Coatings and Films Electronic Optical and Magnetic Materials Characterization (materials science) law.invention chemistry law Materials Chemistry Optoelectronics Quantum efficiency Electrical and Electronic Engineering business Instrumentation |
| Zdroj: | Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 30:031207 |
| ISSN: | 2166-2754 2166-2746 |
| DOI: | 10.1116/1.3696731 |
| Popis: | To meet future demands of free electron lasers, reliable and long lasting photocathodes are needed. With current photocathodes lacking a sufficient combination of both lifetime and high quantum efficiency, research continues to explore ways to formulate improved photocathodes. In this work, we investigate the photoemissive and thermal stability properties of CsAu on a porous tungsten substrate. Quantum efficiency (QE) and robustness characterization of evaporatively deposited metal cathodes, such as gold, opens possibilities for future long-lived high QE dispenser photocathodes on both conductive and insulating diffusion barriers. |
| Databáze: | OpenAIRE |
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