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M. N. Piancastelli, R. Sankari, S. Sorensen, A. De Fanis, H. Yoshida, M. Kitajima, H. Tanaka, and K. Ueda
Resonant Auger decay of above-threshold core-excited H2O
Phys. Rev. A 71, 010703 (2005)

Abstract
The decay properties of an above-threshold resonance in core-ionized water, which is difficult to identify with usual spectroscopic methods, have been analyzed by resonant Auger spectroscopy. The resonance is shown to correspond to a doubly excited neutral state embedded in the O 1s ionization continuum. The main result of the experiments is the assessment on the dissociative nature of the intermediate state, with a consequent fragmentation in H neutral plus O*H core excited. This dissociation takes place on the same time scale as electron decay, and therefore is categorized as an ultrafast dissociation process

Link to the complete paper (if available):
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000071000001010703000001&idtype=cvips&gifs=yes


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