https://doi.org/10.1007/s100530050093
Collision induced dissociation of the heteronuclear alkali ion NaK+. Comparison with the Na2+ and K2+ dissociations
Laboratoire des Collisions Atomiques et
Moléculaires (URA CNRS D 0281) ,
Université Paris-Sud, 91405 Orsay Cedex, France
Corresponding author: a barat@lcam.u-psud.fr
Received:
3
October
1997
Revised:
1
December
1997
Accepted:
16
January
1998
Published online: 15 March 1998
An experimental study of the dissociation of the heteronuclear Na
ion by
collisions with He and H2 targets at a collision energy of 2.4 keV is presented. The use of a
technique based on the measurement of the velocity vectors of the fragments allows
investigating in detail the two basic dissociation mechanisms: impulsive and electronic. In the
present asymmetric case, one is able to assess the relative role of close encounters with each
of the Na+ and atomic cores of the molecule. Electronic transitions at a surface crossing are
proposed to explain processes which happens in close collisions between the core and the
He target.
PACS: 34.50.-s – Scattering of atoms, molecules, and ions / 34.50.Pi – State-to-state scattering analyses / 36.40.Qv – Stability and fragmentation of clusters
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
