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Clusters

TOF/TOF-MS of Metal Clusters produced using PACIS

Brief Description

The Pulsed Arc Cluster Ion Source (PACIS) provides a way of producing metal clusters that is an alternative to laser vaporisation techniques. For a detailed description of its operation, follow the link to cluster sources. It is interfaced with a tandem time-of-flight mass spectrometer (TOF/TOF-MS), which enables selective analysis of cluster ions. The bonding properties of specific cluster sizes can thus be investigated.

Fluorescent discharge from the PACIS The PACIS, in broad daylight...
Fluorescent discharge from the PACIS The PACIS, in broad daylight...

Preliminary Results

Linear TOF mass spectrum of platinum clusters obtained using PACIS

The Pacis Team

The PACIS was custom-built in Edinburgh. It was tested successfully in the summer of 1999 with the help of Silvio Teuber and Josef Tiggesbäumker from the University of Rostock in Germany.

(Click to enlarge)
The PACIS Team, Click to Enlarge
The PACIS Team: From left to right appear Michel Quiniou, Silvio, Will Cook (undergraduate project student) and Josef