Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4389
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dc.contributor.authorCoelho, L. C. C.-
dc.contributor.authorVeloso, J. F. C. A.-
dc.contributor.authorCovita, D. S.-
dc.contributor.authorFerreira, L. F. Requicha-
dc.contributor.authorSantos, J. M. F. dos-
dc.date.accessioned2008-09-01T11:06:17Z-
dc.date.available2008-09-01T11:06:17Z-
dc.date.issued2006en_US
dc.identifier.citationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 569:3 (2006) 796-802en_US
dc.identifier.urihttp://hdl.handle.net/10316/4389-
dc.description.abstractThe 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.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TJM-4M3B6DG-8/1/04ba8b77386c4c69025c7ca19342f792en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectGas scintillationen_US
dc.subjectHigh pressureen_US
dc.subjectCsl photocathodeen_US
dc.subjectGamma-raysen_US
dc.titleHigh-pressure operation of a xenon-GPSC/MSGC hybrid detector for hard X-ray spectrometryen_US
dc.typearticleen_US
item.languageiso639-1en-
item.grantfulltextopen-
item.fulltextCom Texto completo-
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais
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