Characterization of a liquid scintillator based on linear alkyl benzene for neutron detection

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DOIResolve DOI: http://doi.org/10.1016/j.nima.2012.10.127
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TypeArticle
Journal titleNuclear Instruments and Methods in Physics Research A : Accelerators, Spectrometers, Detectors and Associated Equipment
Volume701
Pages221224; # of pages: 4
Subjectscintillation; boron; linear alkyl benzene; neutron; pulse shape discrimination (PSD)
AbstractA liquid scintillator (LS) based on linear alkyl benzene (LAB) solvent has been characterized using multiple radiation sources. The results confirm that boron-loaded LAB is suitable for neutron detection in a gamma ray environment. To study indirectly the LAB pulse shape discrimination (PSD) capability between neutrons and gamma rays, a dissolved 212Pb source emitting alpha and beta particles was used to emulate the conditions in a mixed radiation field for detecting neutrons in the presence of a high gamma ray background. The quenching factor depends on the alpha energy and increases from 10 to 25 as the alpha energy decreases from 10 to 1 MeV. 10B loaded LAB-based LS has been tested in a neutron beam of energy which is equal to 14.56 meV. The observed peak at 60 keVee is attributed to the absorption of neutrons. Our results show that a boron-loaded LAB-based scintillator is a sensitive medium for neutron detection in a relatively large background of gamma rays. A neutron detector could be achieved with a figure of merit (FOM) of 1.75.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number21268024
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Record identifiera6b6251b-a952-430b-b0f0-659bd67545e7
Record created2013-04-03
Record modified2016-05-09
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