title: First observation of a tetra-anionic metal cluster, Al(n)(4-).
abstract: The production of aluminum cluster tetra-anions, and thus the first observation of a tetra-anionic metal cluster in the gas-phase, is reported. The aluminum cluster polyanions were generated by use of the "electron-bath technique." The smallest tetra-anion observed was Al(215) (4-), containing 14% fewer atoms than expected from classical estimates of the tetra-anion appearance size.
authors.affiliation: Institute for Physics, Ernst-Moritz-Arndt University, Greifswald 17489, Germany. walsh@physik.uni-greifswald.de
authors.forename: N
authors.initials: N
authors.lastname: Walsh
authors.forename: F
authors.initials: F
authors.lastname: Martinez
authors.forename: G
authors.initials: G
authors.lastname: Marx
authors.forename: L
authors.initials: L
authors.lastname: Schweikhard
authors.forename: F
authors.initials: F
authors.lastname: Ziegler