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|Title:||Photoelectron Spectroscopy of NpPd3 and PuPd3|
|Authors:||LE M. D.; WALKER H. C.; MC EWEN K. A.; GOUDER THOMAS; HUBER FRANK; WASTIN FRANCK|
|Citation:||JOURNAL OF PHYSICS-CONDENSED MATTER vol. 20 p. 275220-1 275220-3|
|Publisher:||IOP PUBLISHING LTD|
|Type:||Articles in periodicals and books|
|Abstract:||The absolute photoabsorption spectrum of ethylene oxide (C2H4O) has been measured between onset and 30 eV, using monochromated synchrotron radiation. Below the ionization threshold (10.56 eV) the spectrum is dominated by sharp peaks related to excitation of Rydberg series converging on the first ionization energy. Above the ionization threshold, valence-excited states, which give rise to broad bands, predominate. Underlying Rydberg states are signalled in weak vibrational structure on the valence bands. Ab initio multireference configuration interaction (MRDCI) calculations have been carried out to assist in assignment of the excited states, both valence and Rydberg. The lowest-lying valence state is electric-dipole forbidden; the first optically allowed valence state lies close to the ionization onset. The spectrum of the oxide is compared with those of cyclopropane (C3H6) and ethylene sulphide (C2H4S).|
|JRC Directorate:||Nuclear Safety and Security|
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