6533b86cfe1ef96bd12c8927

RESEARCH PRODUCT

First Observation of Doubly Charged Negative Gold Cluster Ions

Lutz SchweikhardS. KrückebergManuel VogelClemens WaltherAlexander Herlert

subject

Range (particle radiation)Gold clusterMaterials scienceCondensed Matter PhysicsPenning trapAtomic and Molecular Physics and OpticsIonMetalvisual_artPhysics::Atomic and Molecular ClustersCathode rayvisual_art.visual_art_mediumCluster (physics)Atomic physicsMathematical PhysicsOrder of magnitude

description

Singly charged gold cluster anions in the size range n = 16–30 have been captured, stored and size selected in a Penning trap. After application of an electron beam doubly charged gold cluster anions have been observed for 20 ≤ n ≤ 30. To our knowledge this is the first observation of metal cluster dianions. The threshold appearance size is in good agreement with a simple charged sphere model. The application of argon gas pulses simultaneously with the electron beam is found to increase the production rate by an order of magnitude.

yearjournalcountryeditionlanguage
1999-01-01Physica Scripta
https://doi.org/10.1238/physica.topical.080a00200