Comparison of Xe and Kr filled ionization chambers for application in digital scanning radiography
✍ Scribed by E.A Babichev; S.E Baru; V.R Groshev; A.G Khabakhpashev; V.A Neustroev; P.A Papushev; V.V Porosev; G.A Savinov; L.I Shekhtman; Yu.G Ukraintsev; Yu.B Yurchenko
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 304 KB
- Volume
- 525
- Category
- Article
- ISSN
- 0168-9002
No coin nor oath required. For personal study only.
✦ Synopsis
Low-dose digital radiographic device ''Siberia'' based on a multistrip ionization chamber was developed in Budker Institute of Nuclear Physics. Originally, the detector was filled with Xe gas under 10 bar pressure, however, the latest study showed that Kr filled detector at 20 bar has higher signal-to-noise ratio (SNR) than Xe one. The main factor affecting SNR is amplitude fluctuation of detected signal. Kr has lower value of K-shell binding energy and less K-shell fluorescence yield than Xe gas. It leads to less distortion of registered X-ray spectra and better energy localization. As a result the detector has better channel shape and higher DQE value.