The polarization dependence of x-ray photoelectron yield of a Au photocathode

P. S. Shaw, S. Hanany, Y. Liu, R. Novick, G. LaRosa, G. Manzo, A. Santangelo, S. Bivona

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We report a measurement of the total photoelectron yield of gold as a function of the incident x-ray polarization. Polarized x rays with energies of 2.5, 2.7, and 4.0 keV were used to excite a gold photocathode at a glancing incidence angle between 5° and 50°. Contrary to a previous report, we found no measurable polarization dependence for all three x-ray energies. We conclude that the modulation factor, i.e., the fractional change of the total yield when the polarization state is varied, is less than 4%.

Original languageEnglish (US)
Pages (from-to)4358-4361
Number of pages4
JournalJournal of Applied Physics
Issue number7
StatePublished - 1994
Externally publishedYes

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