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

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4975469· OSTI ID:1465325
 [1];  [2];  [2];  [2];  [2]
  1. Cornell Univ., Ithaca, NY (United States). Cornell Lab. for Accelerator-Based Sciences and Education; CORNELL UNIVERSITY
  2. Cornell Univ., Ithaca, NY (United States). Cornell Lab. for Accelerator-Based Sciences and Education
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.
Research Organization:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
National Science Foundation (NSF) (United States); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
SC0011643; SC0014338
OSTI ID:
1465325
Alternate ID(s):
OSTI ID: 1361768
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 121; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

A cryogenically cooled high voltage DC photoemission electron source journal August 2018
Topological insulators for the generation of electron beams journal December 2018