A new apparatus for the study of electron impact fragmentation of molecular clusters


Barrett, Gerard and van der Burgt, Peter J.M. (2008) A new apparatus for the study of electron impact fragmentation of molecular clusters. Journal of Physics: Conference Series, 101 (012008). ISSN 1742-6588

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Abstract

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 biomolecules.

Item Type: Article
Additional Information: 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.
Keywords: apparatus; electron impact fragmentation; molecular clusters; water clusters; biomolecules;
Academic Unit: Faculty of Science and Engineering > Experimental Physics
Item ID: 4442
Depositing User: Dr Peter van der Burgt
Date Deposited: 28 Aug 2013 14:29
Journal or Publication Title: Journal of Physics: Conference Series
Publisher: Institute of Physics
Refereed: Yes
URI:

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