Growth and characterization of rugged sodium potassium antimonide photocathodes for high brilliance photoinjector

L. Cultrera, S. Karkare, B. Lillard, A. Bartnik, I. Bazarov, B. Dunham, W. Schaff, K. Smolenski

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Sodium potassium antimonide photocathodes with Quantum Efficiency (QE) in the range of few percent have been grown, and their photoemission properties are measured. We report the intrinsic emittance and response time of electron bunches extracted from this material. It is possible to recover the QE of an overheated cathode by simple potassium addition, and the cathode is rugged enough to deliver tens of mA of average current with no or minimal degradation.

Original languageEnglish (US)
Article number103504
JournalApplied Physics Letters
Volume103
Issue number10
DOIs
StatePublished - Sep 2 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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