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Title: A new method for pulse analysis of driftless-gas proportional scintillation counters
Authors: Simões, P. C. P. S. 
Covita, D. S. 
Veloso, J. F. C. A. 
Santos, J. M. F. dos 
Morgado, R. E. 
Keywords: Xenon gaseous detectors; Gas proportional scintillation counters; Driftless; Pulse analysis
Issue Date: 2003
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:1-2 (2003) 247-251
Abstract: A new method for pulse analysis of driftless-gas proportional scintillation counters (GPSCs) is presented. With this method the requirement for additional analog or digital signal time-analysis and pulse-amplitude correction currently used is eliminated. In contrast to conventional- and driftless-GPSCs that have always relied on long shaping-time constants (several [mu]s), the use of very short linear amplifier shaping-time constants (~50 ns) enables pulse shapes to closely represent the scintillation light-pulse time-profile. Since the number of detected photons in the photosensor increases continuously with depth due to the increase in the solid angle subtended by the photosensor, a maximum is achieved when the primary electron cloud is closest to the anode. This maximum depends only on the number of primary electrons in that cloud, regardless of where the X-ray absorption took place, and is proportional to the X-ray energy.
DOI: 10.1016/S0168-9002(03)01062-3
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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