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Title: The gas proportional scintillation counter/microstrip gas chamber hybrid detector with argon filling
Authors: Monteiro, C. M. B. 
Veloso, J. F. C. A. 
Freitas, D. S. A. P. 
Santos, J. M. F. dos 
Conde, C. A. N. 
Keywords: Gas scintillation counters; CsI photocathodes
Issue Date: 2002
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 490:1-2 (2002) 169-176
Abstract: We present the results of a study of an argon gas proportional scintillation counter instrumented with a CsI-coated microstrip plate placed in the argon envelope. Although the measured light amplification gain and the photoelectron collection efficiency are 70% and 30-40% higher than those obtained in a similar xenon detector, the charge gain achieved in argon for the avalanches produced by the photoelectrons at the microstrip anodes is a factor of ten lower than in xenon. In both cases, these gains are limited by optical positive feedback. The energy resolution achieved for 5.9 keV X-rays was 14.8% compared to 12% in xenon.
Rights: openAccess
Appears in Collections:FCTUC Eng.Civil - Artigos em Revistas Internacionais

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