Barrett, Gerard and van der Burgt, Peter J.M.
A new apparatus for the study of electron impact
fragmentation of molecular clusters.
Journal of Physics: Conference Series, 101 (012008).
This paper reports on the development of a new experiment for the study of
electron-impact induced dissociation and fragmentation of molecular clusters and biomolecules
and other species solvated in water clusters. The purpose is to look at clusters that are of
interest to biophysics, atmospheric physics, and other fields. The experiment consists of a
differentially pumped vacuum system, with an expansion chamber to generate a pulsed
supersonic beam of clusters, and a collision chamber where the cluster beam intersects with an
electron beam. Water clusters can be seeded with biomolecules emerging from a resistively
heated oven. Investigation will be possible into both ion yields and long-lived neutral
metastable yields produced by electron-impact fragmentation of relevant clusters and
||The definitive version of this article is available at doi:10.1088/1742-6596/101/1/012008 . Acknowledgements
The authors wish to acknowledge Mr. Joseph Lynch and Ms. Elaine Duffy, who participated in the
set-up and testing of the apparatus as part of their MSc degrees, and Mr. David Watson, who expertly
machined many of the components of the apparatus. The piezo-electric valve used in the experiment
was kindly provided on loan by Prof. Andrew Murray (University of Manchester, UK). This research
has been funded in part by Enterprise Ireland.
||apparatus; electron impact fragmentation; molecular clusters; water clusters; biomolecules;
||Faculty of Science and Engineering > Experimental Physics
Dr Peter van der Burgt
||28 Aug 2013 14:29
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||Journal of Physics: Conference Series
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