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Your search keyword '"Canton, S. E."' showing total 2 results
Start Over Author "Canton, S. E." Topic photoelectron spectroscopy
2 results on '"Canton, S. E."'

1. The valence band of free K clusters studied by photoelectron and Auger spectroscopies.

Author

Rosso, A., Öhrwall, G., Canton, S. E., Legendre, S., Bradeanu, I. L., Svensson, S., Björneholm, O., and Tchaplyguine, M.

Subjects
POTASSIUM, CONDUCTION electrons, PHOTOELECTRONS, AUGER effect, SYNCHROTRON radiation, PHOTOELECTRON spectroscopy
Abstract

The valence states of free neutral potassium clusters produced by a gas aggregation source were probed by synchrotron radiation based photoelectron spectroscopy. The first ionization energy ( IE) of the clusters was determined to be 10% larger than the work function of bulk potassium. Using electrostatic concepts and the IE, the mean size of the clusters was estimated to be ≈2000 atoms. Further information about the valence band was provided by investigation of the Auger process initiated by the ionization of the 3p level with a subsequent emission of an Auger electron from the valence band (M2,3VV). Plasmon satellites were observed in Auger spectra of free metal clusters. [ABSTRACT FROM AUTHOR]

Published
2009
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2. Direct observation of Young’s double-slit interferences in vibrationally resolved photoionization of diatomic molecules

Author

John D. Bozek, Bruce Rude, Etienne Plésiat, Fernando Martín, Piero Decleva, Sophie E. Canton, Canton, S. E., Plesiat, E., Bozek, J. D., Rude, B. S., Decleva, Pietro, and Martin, F.

Subjects
Multidisciplinary, Chemistry, photoelectron spectroscopy, interference, Analytical chemistry, Synchrotron radiation, Observable, Photoionization, Photon energy, photoionization, Diatomic molecule, Spectral line, molecular ionization, quantum chemistry, Heteronuclear molecule, molecular spectroscopy, Physical Sciences, Physics::Atomic and Molecular Clusters, Density functional theory, Atomic physics, density functional theory
Abstract

Vibrationally resolved valence-shell photoionization spectra of H 2 , N 2 and CO have been measured in the photon energy range 20–300 eV using third-generation synchrotron radiation. Young’s double-slit interferences lead to oscillations in the corresponding vibrational ratios, showing that the molecules behave as two-center electron-wave emitters and that the associated interferences leave their trace in the angle-integrated photoionization cross section. In contrast to previous work, the oscillations are directly observable in the experiment, thereby removing any possible ambiguity related to the introduction of external parameters or fitting functions. A straightforward extension of an original idea proposed by Cohen and Fano [Cohen HD, Fano U (1966) Phys Rev 150:30] confirms this interpretation and shows that it is also valid for diatomic heteronuclear molecules. Results of accurate theoretical calculations are in excellent agreement with the experimental findings.

Published
2011

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