Decomposition channels for multiply charged ammonia clusters
Abstract
Multiply charged ammonia cluster ions are produced by adiabatic nozzle expansion and subsequent ionization by electron impact. They are analyzed in a double focussing sector field mass spectrometer (reversed geometry). Doubly charged clusters are only detected above a critical size of 51 and triply charged clusters above 121. Some of these multiply charged ions decay via metastable dissociation processes in the experimental time window accessible. Doubly charged ammonia clusters with sizes ofn≧51 lose one neutral monomer or, roughly ten times less probable, two neutral monomers. Conversely, triply charged ammonia clusters with sizes 110≦n≦120 show an extremely asymmetric Coulomb dissociation resulting in doubly charged cluster ions of about 90% of the initial mass
Department
Physics
Publication Date
6-1-1986
Journal Title
Zeitschrift für Physik D Atoms, Molecules and Clusters
Publisher
Springer
Digital Object Identifier (DOI)
Document Type
Article
Recommended Citation
D. Kreisle, K. Leiter, O. Echt and T. D. Märk, Decomposition Channels for Multiply Charged Clusters, Z. Phys. D3 (1986) 319