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 .
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| Official URL http://dx.doi.org/10.1109/TNS.2007.908699 |
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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 |
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| 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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