Photon counting and integrating analog gaseous detectors for digital scanning radiography

Photon counting and integrating analog gaseous detectors for digital scanning radiography

In this paper we consider two types of gaseous detectors for radiography. The first one, the Multiwire Proportional Chamber, is used at present as a part of the digital radiographic system. It works in counting mode, has a quantum efficiency of 30% and a spatial resolution of 0.6mm. Our new detector...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 1998-12, Vol.419 (2-3), p.290-294
Hauptverfasser: Babichev, E.A., Baru, S.E., Groshev, V.R., Khabakhpashev, A.G., Porosev, V.V., Savinov, G.A., Shekhtman, L.I., Telnov, V.I.
Format: Artikel
Sprache:eng
Schlagworte:
Ionization chambers
Proportional counters
Quantum efficiency
X ray radiography
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Zusammenfassung:In this paper we consider two types of gaseous detectors for radiography. The first one, the Multiwire Proportional Chamber, is used at present as a part of the digital radiographic system. It works in counting mode, has a quantum efficiency of 30% and a spatial resolution of 0.6mm. Our new detector, the Multistrip Ionisation Chamber, is filled with Xe at 10atm., has a quantum efficiency up to 70% and a spatial resolution of 0.4mm. This method with integration of collected charge allows to avoid the problems of counting rate and gas ageing and considerably reduces the cost of electronics.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(98)00874-2