https://doi.org/10.1140/epjd/e2007-00023-y
Experimental evidence for molecular ultrafast dissociation in O2 clusters
1
Department of Physics, Uppsala University, P.O. Box 530, 751 21 Uppsala, Sweden
2
MAX-Lab, Lund University, Box 118, 221 00 Lund, Sweden
Corresponding author: a torbjorn.rander@fysik.uu.se
Received:
8
September
2006
Revised:
29
September
2006
Published online:
9
February
2007
Resonant Auger spectra of O2 clusters excited at the O1s edge are reported. After excitation to the repulsive 1s-13σ* state, the resulting resonant Auger spectrum displays features that remain constant in kinetic energy as the photon energy is detuned. The shift between known atomic fragment features and these features is consistent with that observed for atoms and clusters in singly charged states in direct photoemission. These findings are strong evidence for the existence of molecular ultrafast dissociation processes within the clusters or on their surface.
PACS: 36.40.-c – Atomic and molecular clusters / 36.40.Mr – Spectroscopy and geometrical structure of clusters / 33.80.Eh – Autoionization, photoionization, and photodetachment
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007
