Zobrazeno 1 - 10
of 102
pro vyhledávání: '"R.E. Morgado"'
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
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 elimina
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:223-227
The results of a comparative study of a xenon gas proportional scintillation counter instrumented with photosensors based on two variants of a CsI photocathode and a microstrip plate are reported. The photosensors were isolated from the gas proportio
Publikováno v:
IEEE Transactions on Nuclear Science. 49:875-880
We report the performance characteristics of a new microstructure, the Micro-Hole-and-Strip Plate (MHSP), operated initially as an X-ray proportional counter. The MHSP is a combination of the features of a microstrip plate (MSP) and a gas electron mu
Publikováno v:
Scopus-Elsevier
CIÊNCIAVITAE
CIÊNCIAVITAE
The performance characteristics of a xenon gas proportional scintillation counter instrumented with an large-area avalanche photodiode with enhanced UV-sensitivity were evaluated. By integrating the photodiode within the xenon gas envelope of the sci
Publikováno v:
IEEE Transactions on Nuclear Science. 47:928-932
The application of recently developed VUV silicon photodiodes as a replacement for the standard photomultiplier tube (PMT) in a gas proportional scintillation counter (GPSC) is investigated. A photodiode positioned within the gas envelope would resul
Autor:
R.E. Morgado, C.A.N. Conde, T.H.V.T. Dias, Allan Stauffer, P.J.B.M. Rachinhas, Paulo Simões, J. A. M. Lopes, J.M.F. dos Santos
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The application of gas proportional scintillation counters (GPSC) to the detection and identification of conversion electrons in the medium energy range is investigated. Experimental and Monte Carlo results are presented for the response of a xenon G
Publikováno v:
IEEE Transactions on Nuclear Science. 45:229-233
The curved-grid technique was developed to maintain the superior performance of large-area gas proportional scintillation counters (GPSCs) without resorting to complex and bulky focusing systems or large photomultiplier tubes (PMTs) for applications
Autor:
Luis M. N. Tavora, M. Rawool-Sullivan, R.E. Morgado, Edward James Morton, R.J. Estep, W.B. Gilboy
Publikováno v:
IEEE Transactions on Nuclear Science. 45:970-975
This work investigates the use of annihilation photons from gamma-ray-induced electron-positron pair production to inspect objects when only one side is accessible. The Z/sup 2/-dependence of the pair-production cross section and the high penetration
Publikováno v:
IEEE Transactions on Nuclear Science. 44:517-520
A xenon gas proportional scintillation counter has been instrumented with a novel photosensor that replaces the photomultiplier tube normally used to detect the VUV secondary scintillation light. In this implementation, the collection grid of a plana
Autor:
F.P. Santos, C.A.N. Conde, J.F.C.A. Veloso, J. A. M. Lopes, P.J.B.M. Rachinhas, J.M.F. dos Santos, Allan Stauffer, R.E. Morgado, T.H.V.T. Dias
Publikováno v:
IEEE Transactions on Nuclear Science. 43:1432-1441
We have observed that the pulse-height distributions of X-ray events that deposit essentially the same amount of energy in a xenon gas detector will vary according to the deexcitation pathways available to the photoionized atoms. A xenon gas proporti