6533b85ffe1ef96bd12c1938
RESEARCH PRODUCT
Photoinduced dissociation of anionic and electron detachment of dianionic gold clusters by use of a laser pointer
Lutz SchweikhardAlexander HerlertManuel Vogelsubject
Gold clusterChemistryBranching fractionPhotodissociationElectron shellCondensed Matter PhysicsPenning trapPhotochemistryDissociation (chemistry)PhotoexcitationCluster (physics)Physical chemistryPhysical and Theoretical ChemistryInstrumentationSpectroscopydescription
Abstract Size-selected anionic and dianionic gold clusters have been stored in a Penning trap and irradiated with the green light of a laser pointer. As examples of special interest, the systems Au 7 − and Au 29 2− have been chosen. In particular, Au 7 − , a small gold cluster with closed electron shell, is observed to decay into Au 6 − and Au 5 − with a decay pathway branching ratio similar to that of Au 9 + . The dianionic cluster Au 29 2− shows electron detachment upon photoexcitation. This observation is in agreement with independent experiments [Stoermer et al., Int. J. Mass Spectrom. 201 (2001) 63], where Au 29 2− is found to be the smallest dianion produced by neutral monomer evaporation of hot dianionic gold clusters.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-02-01 | International Journal of Mass Spectrometry |