Electric-dipole–quadrupole interference of overlapping autoionizing levels in photoelectron energy spectra

N. L.S. Martin, D. B. Thompson, R. P. Bauman, C. D. Caldwell, M. O. Krause, S. P. Frigo, M. Wilson

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

We have measured the photon energy dependence of electric-dipole–quadrupole interference in cadmium between the odd parity 4d95s25p J=1 and even parity 5p6p3P2 autoionizing levels. The resonant interference structure is isolated by taking the difference between constant ionic state spectra at 45° with respect to the photon beam in the forward and backward directions. We find interference effects that are approximately 0.5% of the dipole cross section for photon energies of 13 eV, in good agreement with theory. We compare the results with those from (e,2e) experiments.

Original languageEnglish
Pages (from-to)1199-1202
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number6
DOIs
StatePublished - 1998

ASJC Scopus subject areas

  • General Physics and Astronomy

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