The performance of the GPSC/MSGC hybrid detector with neon-xenon gas mixtures
- Resource Type
- Conference
- Authors
- Fernandes, L.M.P.; Freitas, D.S.A.P.; Trindade, A.M.F.; Veloso, J.F.C.A.; Monteiro, C.M.B.; Ferreira, L.F.R.; dos Santos, J.M.F.
- Source
- 2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515) Nuclear science symposium Nuclear Science Symposium Conference Record, 2003 IEEE. 1:651-655 Vol.1 2003
- Subject
- Nuclear Engineering
Power, Energy and Industry Applications
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Solid scintillation detectors
Xenon
Energy resolution
Microstrip
Filling
Optical feedback
Cathodes
Argon
Radiation detectors
Scintillation counters
- Language
- ISSN
- 1082-3654
The performance for x-ray spectrometry of neon-xenon gas proportional scintillation counters using a CsI-coated microstrip plate in direct contact with the scintillation gas as a VUV photosensor is investigated for different neon-xenon mixtures. At best operation conditions, the detector gain can reach values about 50% higher than those achieved with pure xenon filling. The highest gains and the best energy resolutions are achieved for xenon contents around 40%. However, the achieved energy resolutions are similar to those achieved with pure xenon. As in pure xenon and argon-xenon mixture gas-fillings, the detector performance is limited by optical positive feedback resulting from additional scintillation produced in the electron avalanche processes around the MSP-anodes. Best energy resolutions are achieved for positive feedback gains in the range of 1.1 to 1.2. The performance achieved with neon-xenon mixtures is inferior to that achieved with argon-xenon mixtures.