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Title: Rb based alkali antimonide high quantum efficiency photocathodes for bright electron beam sources and photon detection applications

In this paper, high quantum efficiency alkali antimonide photocathodes have been grown over both stainless steel and glass substrates using sequential evaporation of Sb, K, Rb, and Cs. Quantum efficiencies well above 25% have been measured at 400 nm. Finally, a bi-alkali Rb-K-Sb photocathode grown on a stainless steel substrate has been installed in a high voltage DC gun at Cornell University and the intrinsic electron beam emittance was measured at different photon energies.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Cornell Univ., Ithaca, NY (United States). Cornell Lab. for Accelerator-Based Sciences and Education
Publication Date:
Grant/Contract Number:
SC0014338; SC0011643; PHY-1416318
Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 121; Journal Issue: 5; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Research Org:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; vacuum chambers; photons; photoelectric conversion; thin film growth; electron beams; photoemission; cathodes; photocathodes; electric fields; electric measurements
OSTI Identifier:
1465325
Alternate Identifier(s):
OSTI ID: 1361768

Cultrera, L., Gulliford, C., Bartnik, A., Lee, H., and Bazarov, I.. Rb based alkali antimonide high quantum efficiency photocathodes for bright electron beam sources and photon detection applications. United States: N. p., Web. doi:10.1063/1.4975469.
Cultrera, L., Gulliford, C., Bartnik, A., Lee, H., & Bazarov, I.. Rb based alkali antimonide high quantum efficiency photocathodes for bright electron beam sources and photon detection applications. United States. doi:10.1063/1.4975469.
Cultrera, L., Gulliford, C., Bartnik, A., Lee, H., and Bazarov, I.. 2017. "Rb based alkali antimonide high quantum efficiency photocathodes for bright electron beam sources and photon detection applications". United States. doi:10.1063/1.4975469. https://www.osti.gov/servlets/purl/1465325.
@article{osti_1465325,
title = {Rb based alkali antimonide high quantum efficiency photocathodes for bright electron beam sources and photon detection applications},
author = {Cultrera, L. and Gulliford, C. and Bartnik, A. and Lee, H. and Bazarov, I.},
abstractNote = {In this paper, high quantum efficiency alkali antimonide photocathodes have been grown over both stainless steel and glass substrates using sequential evaporation of Sb, K, Rb, and Cs. Quantum efficiencies well above 25% have been measured at 400 nm. Finally, a bi-alkali Rb-K-Sb photocathode grown on a stainless steel substrate has been installed in a high voltage DC gun at Cornell University and the intrinsic electron beam emittance was measured at different photon energies.},
doi = {10.1063/1.4975469},
journal = {Journal of Applied Physics},
number = 5,
volume = 121,
place = {United States},
year = {2017},
month = {2}
}