Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures

Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures

Cs_{x}K_{y}Sb photocathodes were manufactured on a niobium substrate and evaluated over a range of temperatures from 300 to 77 K. Vacuum conditions were identified that minimize surface contamination due to gas adsorption when samples were cooled below room temperature. Measurements of the photocath...

Full description

Bibliographic Details
Main Authors: M. A. Mamun, M. R. Hernandez-Flores, E. Morales, C. Hernandez-Garcia, M. Poelker
Format: Article
Language:English
Published: American Physical Society 2017-10-01
Series:Physical Review Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevAccelBeams.20.103403
id doaj-6fa24e3803f849d0a786946682592554
record_format Article
spelling doaj-6fa24e3803f849d0a7869466825925542020-11-24T21:52:08ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882017-10-01201010340310.1103/PhysRevAccelBeams.20.103403Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperaturesM. A. MamunM. R. Hernandez-FloresE. MoralesC. Hernandez-GarciaM. PoelkerCs_{x}K_{y}Sb photocathodes were manufactured on a niobium substrate and evaluated over a range of temperatures from 300 to 77 K. Vacuum conditions were identified that minimize surface contamination due to gas adsorption when samples were cooled below room temperature. Measurements of the photocathode spectral response provided a means to evaluate the photocathode band gap dependence on the temperature and to predict the photocathode quantum efficiency at 4 K, a typical temperature at which superconducting radio frequency photoguns operate.http://doi.org/10.1103/PhysRevAccelBeams.20.103403
collection DOAJ
language English
format Article
sources DOAJ
author M. A. Mamun
M. R. Hernandez-Flores
E. Morales
C. Hernandez-Garcia
M. Poelker
spellingShingle M. A. Mamun
M. R. Hernandez-Flores
E. Morales
C. Hernandez-Garcia
M. Poelker
Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
Physical Review Accelerators and Beams
author_facet M. A. Mamun
M. R. Hernandez-Flores
E. Morales
C. Hernandez-Garcia
M. Poelker
author_sort M. A. Mamun
title Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
title_short Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
title_full Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
title_fullStr Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
title_full_unstemmed Temperature dependence of alkali-antimonide photocathodes: Evaluation at cryogenic temperatures
title_sort temperature dependence of alkali-antimonide photocathodes: evaluation at cryogenic temperatures
publisher American Physical Society
series Physical Review Accelerators and Beams
issn 2469-9888
publishDate 2017-10-01
description Cs_{x}K_{y}Sb photocathodes were manufactured on a niobium substrate and evaluated over a range of temperatures from 300 to 77 K. Vacuum conditions were identified that minimize surface contamination due to gas adsorption when samples were cooled below room temperature. Measurements of the photocathode spectral response provided a means to evaluate the photocathode band gap dependence on the temperature and to predict the photocathode quantum efficiency at 4 K, a typical temperature at which superconducting radio frequency photoguns operate.
url http://doi.org/10.1103/PhysRevAccelBeams.20.103403
work_keys_str_mv AT mamamun temperaturedependenceofalkaliantimonidephotocathodesevaluationatcryogenictemperatures
AT mrhernandezflores temperaturedependenceofalkaliantimonidephotocathodesevaluationatcryogenictemperatures
AT emorales temperaturedependenceofalkaliantimonidephotocathodesevaluationatcryogenictemperatures
AT chernandezgarcia temperaturedependenceofalkaliantimonidephotocathodesevaluationatcryogenictemperatures
AT mpoelker temperaturedependenceofalkaliantimonidephotocathodesevaluationatcryogenictemperatures
_version_ 1725876654015774720

Similar Items