NDLI: Performance of CsI(Na) scintillators in γ-Ray spectrometry

Content Provider	IEEE Xplore Digital Library
Author	Syntfeld-Kazuch, A. Sibczynski, P. Moszynski, M. Gektin, A.V. Grodzicka, M. Iwanowska, J. Szawlowski, M. Szczesniak, T. Swiderski, L.
Copyright Year	2009
Description	Author affiliation: Andrzej Soltan Institute for Nuclear Studies, PL-05-400 Otwock, Swierk. Poland (Syntfeld-Kazuch, A.; Sibczynski, P.; Moszynski, M.; Grodzicka, M.; Iwanowska, J.; Szawlowski, M.; Szczesniak, T.; Swiderski, L.) \|\| Institute for Scintillation Materials, 60 Lenin Ave. 61001 Kharkov, Ukraine (Gektin, A.V.)
Abstract	An optimization of the performance of CsI(Na) scintillators coupled to a photomultiplier and irradiated by γ rays is presented. Earlier studies showed that scintillators exhibiting two or more light pulse components in the deexcitation process (e.g. CsI(Tl), Nal(Tl) in reduced temperatures) perform better when longer integration time is set in the amplifier. Such properties like energy resolution and non-proportional response improve while lengthening shaping time in the amplifier. At 12 μs shaping time constant the measured energy resolution for a special grade 1"xl" CsI(Na) sample was as good as 5.8±0.1%. Light pulse shape measurements showed that CsI(Na) scintillators irradiated by γ rays deexcite mostly in the microsecond range and the light pulse consists of three components: -470 ns (fast), -1.8 μβ (slow) and -8 μs (tail) with the relative intensities about 41%, 28% and 31%, respectively. From the point of view of a potential use of CsI(Na) in homeland security applications the crystal was compared to commonly used Nal(Tl) with taking into account such parameters as: energy resolution, non-proportionality, photopeak efficiency and others.
Starting Page	1474
Ending Page	1479
File Size	201511
Page Count	6
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402295
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spectroscopy Pulse amplifiers Energy resolution Pulse measurements Pulse shaping methods Photomultipliers Temperature Energy measurement Time measurement Shape measurement border monitoring Cesium Iodide CsI(Na) non-proportionality energy resolution
Content Type	Text
Resource Type	Article

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