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Cs2LiLa(Br, Cl)(6) Crystals for Nuclear Security Applications

Author:
Hawrami, R.  Pandian, L. Soundara  Ariesanti, E.  Glodo, J.  Finkelstein, J.  Tower, J.  Shah, K.  


Journal:
IEEE TRANSACTIONS ON NUCLEAR SCIENCE


Issue Date:
2016


Abstract(summary):

Properties of dual-mode scintillation detectors based on CLLBC crystals are reported. Energy resolution and light yield are measured at 2.9% (FWHM) at 662 keV and 45 000 photons/MeV, respectively, for a 1-in-diameter and 1-in-long crystal. With less than 2% variation in light yield as a function of energy, CLLBC has better proportionality than LaBr3 and NaI:Tl. Neutron peak resulting from reactions with neutrons emitted by Cf-252 (moderated) is measured at a gamma energy equivalent of 3.1 MeVee (electron energy equivalent), making pulse height discrimination between gamma-rays and neutrons easy. The material is also of effective pulse shape discrimination. The figure-of-merit for discrimination of gamma rays and thermal neutrons in CLLBC can be as high as 3.2, which is comparable to that of CLYC.


Page:
509---512


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