Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4389
Title: High-pressure operation of a xenon-GPSC/MSGC hybrid detector for hard X-ray spectrometry
Authors: Coelho, L. C. C. 
Veloso, J. F. C. A. 
Covita, D. S. 
Ferreira, L. F. Requicha 
Santos, J. M. F. dos 
Keywords: Gas scintillation; High pressure; Csl photocathode; Gamma-rays
Issue Date: 2006
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 569:3 (2006) 796-802
Abstract: The performance of a high-pressure xenon gas proportional scintillation counter/microstrip gas chamber (GPSC/MSGC) hybrid detector has been investigated for filling pressures from 1 up to 10 bar, for 22-, 30- and 60-keV photons. GPSC/MSGC hybrid detectors are based on a xenon-GPSC instrumented with a CsI-coated microstrip plate photosensor placed directly within the xenon envelope, as a substitute for the photomultiplier tube. This design avoids the constraints due to the use of a quartz scintillation window for GPSC-photosensor coupling, which absorbs a significant amount of scintillation and is a drawback for applications where large detection areas and high filling pressures are needed. The lowest energy resolutions are achieved for 2 bar (5.5% and 3.4%, FWHM, for 22- and 60-keV photons, respectively). Increasing the pressure to the 5-6 bar range, competitive energy resolutions of 7% and 4.5% are still achieved for 22- and 60-keV photons, respectively. This detector could be a compelling alternative in applications where compactness, large detection area, insensitivity to strong magnetic fields, room temperature operation, large signal-to-noise ratio and good energy resolution are important requirements.
URI: http://hdl.handle.net/10316/4389
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
file7ec5ce716d0f41388a733dcd9f1d83c6.pdf339.13 kBAdobe PDFView/Open
Show full item record

Page view(s) 50

280
checked on Nov 6, 2019

Download(s) 20

576
checked on Nov 6, 2019

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.