Helmholtz Gemeinschaft


Observation of doubly charged triatomic cluster ions in field evaporation

Item Type:Article
Title:Observation of doubly charged triatomic cluster ions in field evaporation
Creators Name:Drachsel, W., Jentsch, T.J., Gingerich, K.A. and Block, J.H.
Abstract:Field evaporation, induced by short laser pulses, is used as a source for producing cluster ions. Besides atomic ions, which are field evaporated from most of the metals at low temperatures, a temperature pulse, caused by photon impact, induces atomic agglomeration and cluster formation. The investigation of triatomic clusters of metals like Cu, Ag, Au, Ni, W, etc., revealed that some of the doubly charged species are detectable, others are absent. A comparison with other experimental data leads to a simple empirical rule; a stability criterion is derived by balancing the attractive bond energies of neutral cluster and repulsive Coulomb energies within the doubly charged ones. Advantages and restraints of this model are discussed.
Source:Surface Science
Number:Pt 1
Page Range:173-182
Date:3 June 1985
Official Publication:https://doi.org/10.1016/0039-6028(85)90571-0

Repository Staff Only: item control page

Open Access
MDC Library