Method for monitoring GaAs photocathode heat cleaning temperature

N. B. Clayburn, K. W. Trantham, M. Dunn, T. J. Gay

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Before a GaAs photocathode can be activated to achieve a negative electron affinity condition, the GaAs crystal must be cleaned. This is most commonly done by ohmic, radiative, or electron bombardment heating. We report a new technique to monitor the temperature of heated GaAs photocathodes by observation with a camera. The method is robust and yields the same temperatures for different GaAs samples heated using different methods in different mounting configurations.

Original languageEnglish (US)
Article number124903
JournalReview of Scientific Instruments
Issue number12
StatePublished - Dec 1 2016

ASJC Scopus subject areas

  • Instrumentation


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