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Title: Short induction gap gas electron multiplier (GEM) for X-ray spectroscopy
Authors: Mir, J. A. 
Stephenson, R. 
Rhodes, N. J. 
Schooneveld, E. M. 
Veloso, J. F. C. A. 
Santos, J. M. F. dos 
Keywords: Gas Electron Multiplier; Effective gain; X-ray energy resolution
Issue Date: 2007
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 573:1-2 (2007) 179-182
Abstract: Experimental work was carried out to evaluate the performance of a Gas Electron Multiplier (GEM) operated with a micromesh readout plane that enabled the induction gap to be set at 50 [mu]m. We measured the essential operational parameters of this system using Ar(75%)-isobutane (25%) as the counter gas mixture. The measurements included the effective gain, effective gain stability, and the X-ray energy resolution using a 5.89 keV X-ray source. These studies demonstrated several advantages of the current system when compared with the standard operation, such as lower operational voltages, higher effective gains and improved effective gain stability.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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