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Energy resolution and non-proportionality of the light yield of pure CsI at liquid nitrogen temperatures
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2005 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, Vol. 537, no 02-jan, 357-362 p.Article in journal (Refereed) Published
Abstract [en]

The energy resolution and non-proportionality of the light yield versus gamma-ray energy of pure CsI scintillators directly coupled to Large Area Avalanche Photodiodes (LAAPDs) and cooled down to the liquid nitrogen temperatures have been studied. A very high light output above 100 000 ph/MeV was measured. One of the samples showed nearly proportional light yield response versus energy of gamma-rays yielding energy resolution of 4.3-0.2% for 662 keV gamma-rays from a (CS)-C-137 source. The intrinsic resolution of the crystals versus energy of gamma-rays has been estimated by measurements of the number of primary electron-hole pairs generated in LAAPD by scintillation light. Inspection of the gamma-ray-induced emission spectra of tested samples allows discussing different shapes of non-proportionality curves observed with various samples of CsI.

Place, publisher, year, edition, pages
2005. Vol. 537, no 02-jan, 357-362 p.
Keyword [en]
scintillators, pure NaI, energy resolution, intrinsic resolution, non-proportinality of light yield, avalanche photodiodes, area avalanche photodiodes, sodium-iodide, scintillation, nai, rays
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-14496DOI: 10.1016/j.nima.2004.08.043ISI: 000226737200078Scopus ID: 2-s2.0-11344276706OAI: oai:DiVA.org:kth-14496DiVA: diva2:332537
Note
QC 20100525 QC 20111011. 7th International Conference on Inorganic Scintillators and Industrial Applications. Polytechnic Univ Valencia, Valencia, ITALY. SEP 08-12, 2003Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-10-11Bibliographically approved

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