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Title: Performance characteristics of a gas proportional scintillation counter coupled to a microstrip gas chamber photosensor
Authors: Veloso, J. F. C. A. 
Santos, J. M. F. dos 
Conde, C. A. N. 
Keywords: Gas proportional scintillation counter; Microstrip gas chamber photosensor
Issue Date: 1999
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422:1-3 (1999) 273-277
Abstract: A P10-filled microstrip gas chamber (MSGC) is used to replace the conventional photomultiplier tube (PMT) as the photosensor for a Gas Proportional Scintillation Counter (GPSC). The Vacuum Ultra-Violet (VUV) scintillation light produced in the xenon-filled GPSC is transmitted through a 1 mm thick high-purity quartz window to the MSGC where it is converted to photoelectrons by a CsI photocathode deposited directly onto the surface of a microstrip plate (MSP). These photoelectrons are afterwards multiplied near the microstrip plate anodes with a charge gain of about 103. The energy resolution achieved for 5.9 keV X-rays is 11.5% which, while not yet as good as the 8% figure for standard GPSC (instrumented with a PMT), is already better than the energy resolution obtained for standard proportional counters. Experimental results are presented and discussed. With this design a compact GPSC is obtained which has the further advantage of being much less sensitive to magnetic fields than PMT-based GPSCs.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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