Abstract
The kinetic energy release (KER) and angular distribution for dissociation and ionization of in an intense short pulse laser at was measured by employing a coincidence three-dimensional momentum imaging method that provides kinematically complete information on the dissociation. At an intensity of a high-KER peak unexpectedly appears in the dissociation spectrum in addition to the usual low-KER peak . Additionally, the KER distribution in ionization, which peaks around , has a tail that surprisingly extends well beyond the Coulomb explosion energy. Both these high-KER contributions result from dissociation pathways involving highly excited states of with steep potential curves as indicated by the dressed state potential energy curves picture.
- Received 7 May 2008
DOI:https://doi.org/10.1103/PhysRevA.78.033430
©2008 American Physical Society