6533b870fe1ef96bd12d03ee
RESEARCH PRODUCT
Collision induced dissociation of stored gold cluster ions
St. BeckerH.-j. KlugeJ. ZieglerDietmar KreisleLutz SchweikhardS. KrückebergM. LindingerK. LützenkirchenN. KlischG. DietrichH. WeideleH.-u. Hassesubject
Gold clusterDelocalized electronMaterials scienceCollision-induced dissociationExcited stateJelliumPhysics::Atomic and Molecular ClustersAtomic physicsPenning trapAtomic and Molecular Physics and OpticsDissociation (chemistry)Iondescription
The stability of gold cluster ions Au + (2≦n≦23) has been investigated via collision induced dissociation in a Penning trap. Threshold energies and dissociation channels have been determined. The cluster stability exhibits a pronounced odd — even alternation: Clusters with an odd number of atoms,n, are more stable than the even-numbered ones. Enhanced stabilities are found for Au 3 + , Au 9 + , and Au 19 + in accordance with the Clemenger-Nilsson and the deformed jellium model of delocalized valence electrons. Excited odd cluster ions withn≦15 predominantly decay by evaporation of dimers; all others decay by monomer evaporation. From the dissociation channels estimates of the binding energies are deduced.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-12-01 | Zeitschrift f�r Physik D Atoms, Molecules and Clusters |