Mir, J. A., Sole, D., Lipp, J. D., Stephenson, R., Purton, J. A., Savin, S. L. P., 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 2). pp. 2637-2641. ISSN 0018-9499

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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:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics
Journal or Publication Title:	IEEE TRANSACTIONS ON NUCLEAR SCIENCE
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN:	0018-9499
Date:	December 2007
Volume:	54
Number:	6 Part 2
Number of Pages:	5
Page Range:	pp. 2637-2641
Identification Number:	10.1109/TNS.2007.908699
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/30827

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