Low X-ray energy fluorescence Gas Electron Multiplier (GEM) for XAS studies

Mir, J.A. and Sole, D. and Lipp, J.D. and Stephenson, R. and Purton, J.A. and Savin, S.L.P. and Chadwick, A.V. and O'Dell, L. (2007) Low X-ray energy fluorescence Gas Electron Multiplier (GEM) for XAS studies. IEEE Transactions on Nuclear Science, 54 (6 Part). pp. 2637-2641. ISSN 0018-9499 . (Access to this publication is restricted)

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http://dx.doi.org/10.1109/TNS.2007.908699

Abstract

X-ray absorption spectroscopy at sub-keV energies dictates the use of detectors that can attain a good signal-to-noise ratio. We report a recent study undertaken at Science and Technology Facilities Council, Daresbury Laboratory to evaluate the performance of a Gas Electron Multiplier (GEM) for this purpose. The main impetus of this study was to investigate the relevant parameters such as the effective gain and energy resolution in the X-ray energy range of 270-930 eV. This study demonstrated that a single stage GEM can sustain effective gains up to 60 000 in a helium-isobutane counter gas mixture at atmospheric pressure. Consequently, high signal-to-noise ratios were achieved (electronic noise similar to 500 electrons r.m.s) thereby permitting adequate X-ray energy resolution.

Item Type: Article
Uncontrolled keywords: effective gain; gas electron multiplier; X-ray absorption spectroscopy; X-ray energy resolution
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Suzanne Duffy
Date Deposited: 24 Apr 2008 08:50
Last Modified: 05 Sep 2011 23:29
Resource URI: http://kar.kent.ac.uk/id/eprint/2778 (The current URI for this page, for reference purposes)
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