Electric-Dipole{endash}Quadrupole Interference of Overlapping Autoionizing Levels in Photoelectron Energy Spectra

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.1199· OSTI ID:665031

Martin, N L; Thompson, D B; Bauman, R P ^[1]; Caldwell, C D; Krause, M O; Frigo, S P ^[2]; Wilson, M ^[3]

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1. Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)
2. Department of Physics, University of Central Florida, Orlando, Florida 32816 (United States)
3. Physics Department, Royal Holloway, University of London, Egham, Surrey TW20 0EX (United Kingdom)

We have measured the photon energy dependence of electric-dipole{endash}quadrupole interference in cadmium between the odd parity 4d{sup 9}5s{sup 2}5p J=1 and even parity 5p6p {sup 3} P{sub 2} autoionizing levels. The resonant interference structure is isolated by taking the difference between constant ionic state spectra at 45{degree} with respect to the photon beam in the forward and backward directions. We find interference effects that are approximately 0.5{percent} of the dipole cross section for photon energies of 13thinspeV, in good agreement with theory. We compare the results with those from (e,thinsp2e) experiments. {copyright} {ital 1998} {ital The American Physical Society }

• DOE Contract Number: FG02-91ER14214
• OSTI ID: 665031
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AUTOIONIZATION
CADMIUM
CROSS SECTIONS
ELECTRIC DIPOLES
ELECTRIC MOMENTS
ENERGY DEPENDENCE
INTERFERENCE
PARITY
PHOTOELECTRON SPECTROSCOPY
PHOTONS
QUADRUPOLE MOMENTS