Abstract
Charge-exchange and fragmentation cross-section measurements on , , and are presented. Limits on the cluster electron affinities are obtained in terms of the ionization energies of Ar, , Kr, CO, Xe, and . Fragmentation cross sections, largely independent of the gas species, are comparable to those for charge exchange. The metastability of is shown to be implied by the lower bound on its electron affinity.
- Received 5 October 1988
DOI:https://doi.org/10.1103/PhysRevLett.62.1037
©1989 American Physical Society