Photoemission studies of niobium and lead photocathodes using picosecond UV laser
Photoemission studies of niobium and lead photocathodes using picosecond UV laser
Xiang, R.; Arnold, A.; Lu, P.; Murcek, P.; Teichert, J.; Vennekate, H.; Barday, R.
We present the results of our investigations on superconducting photocathodes for supercondcuting rf injectors. Bulk niobium and lead film on niobium have been considered as the best candidates. The quantum efficiency (QE) at room temperature has been measured with 258 nm UV laser pulses of 14 ps duration. A QE of 10-4 has been obtained for the lead film. In order to improve the photoemission yield of niobium, new treatment methods, like Cs-activation and implantation with alkali metals, have been applied and the results are reported.
Keywords: photocathode; niobium; lead; quantum efficiency (QE)
Involved research facilities
- Radiation Source ELBE DOI: 10.17815/jlsrf-2-58
Related publications
- DOI: 10.17815/jlsrf-2-58 is cited by this (Id 20779) publication
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Contribution to proceedings
the 36th International Free Electron Laser Conference (FEL 2014), 25.-29.08.2014, Basel, Switzerland
Proceedings of FEL2014 -
Poster
the 36th International Free Electron Laser Conference (FEL 2014), 25.-29.08.2014, Basel, Switzerland
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