Doubly charged clusters - neutral atom charge transfer: the role of the Coulombic repulsion
Laboratoire Aimé Cotton (CNRS UPR 3321) ,
bâtiment 505, Université Paris-Sud, 91405 Orsay Cedex, France
Corresponding author: a email@example.com
Published online: 15 September 2001
We have studied experimentally the collisional charge transfer between a neutral atom and a multicharged metal-atom cluster. The charge transfer cross section measured for Na Cs is in the range of 400 Å2. The time-of-flight mass analysis of the singly charged collision products demonstrates that an energy of about 0.5 eV is deposited in the cluster fragment during the charge transfer collision. This effect can be interpreted as a charge transfer to an excited state of the metal cluster. The measured cross section for Na Cs is larger than the one for Na Cs collisions. This difference between these two systems is due to the existence, for the first one, of a Coulombic repulsion term in the collision output channel.
PACS: 36.40.Cg – Electronic and magnetic properties of clusters / 36.40.Jn – Reactivity of clusters
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001