Interference effects in resonant Auger decay of atomic caesium

High-resolution electron spectroscopy with synchrotron radiation excitation was used to study the resonant Auger decay of atomic caesium. The resonant Auger spectra with different photon energies across the 4d5/2 - > 6p photoabsorption resonances were measured and the results were compared to the...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2008-02, Vol.41 (3), p.035007-035007 (6), Article 035007
Main Authors: Niskanen, J, Nikkinen, J, Heinäsmäki, S, Huttula, M, Jänkälä, K, Fritzsche, S, Aksela, S, Aksela, H
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Auger effect and inner-shell excitation or ionization
Exact sciences and technology
Photon interactions with atoms
Physics
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Summary:High-resolution electron spectroscopy with synchrotron radiation excitation was used to study the resonant Auger decay of atomic caesium. The resonant Auger spectra with different photon energies across the 4d5/2 - > 6p photoabsorption resonances were measured and the results were compared to the multiconfiguration Dirac-Fock calculations. The high kinetic energy resolution made it possible to observe interference effects between the decay of different overlapping 4d5/2 - > 6p resonant states. The partial electron yield covering transitions to 5p-26s6p final ionic states was calculated and observed experimentally. The interference effects were found to average out, resulting in the absorption spectrum.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/41/3/035007