Effect of multiple γ-ray interactions on ionisation quenching corrections in liquid scintillants

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dc.contributor.authorBignell, LJen_AU
dc.contributor.authorMo, Len_AU
dc.contributor.authorAlexiev, Den_AU
dc.contributor.authorHashemi-Nezhad, SRen_AU
dc.date.accessioned2010-04-19en_AU
dc.date.accessioned2010-04-30T05:08:31Zen_AU
dc.date.available2010-04-19en_AU
dc.date.available2010-04-30T05:08:31Zen_AU
dc.date.issued2010-03-01en_AU
dc.date.statistics2010-03-01en_AU
dc.description.abstractThe effect of multiple γ-ray interactions within a liquid scintillation detector caused by a single radionuclide decay event on ionisation quenching corrections has been determined. Ionisation quenching corrections to the energy deposition spectrum have been carried out over all electron-generating gamma interactions of the decay event. Comparison has been made with the approximate method typically used to correct for ionisation quench. Both calculations were carried out using the Geant4 simulation package. The two models are compared using the values of detection efficiencies of the logical sum of double coincidence obtained for 131I, 123I and 177Lu measured using the Triple-to-Double Coincidence Ratio method of absolute activity measurement. Finally, predictions are made as to the circumstances under which the two quench correction approaches will be most discrepant. © 2010, Elsevier Ltd.en_AU
dc.identifier.citationBignell, L. J., Mo, L., Alexiev, D., & Hashemi-Nezhad, S. R. (2010). Effect of multiple γ-ray interactions on ionisation quenching corrections in liquid scintillants. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 614(2), 231-236. doi:10.1016/j.nima.2009.12.026en_AU
dc.identifier.govdoc1548en_AU
dc.identifier.issn0168-9002en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipmenten_AU
dc.identifier.pagination231-236en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.nima.2009.12.026en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3190en_AU
dc.identifier.volume614en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectQuenchingen_AU
dc.subjectLiquid scintillation detectorsen_AU
dc.subjectIonizationen_AU
dc.subjectInteractionsen_AU
dc.subjectCoincidence methodsen_AU
dc.subjectDecayen_AU
dc.titleEffect of multiple γ-ray interactions on ionisation quenching corrections in liquid scintillantsen_AU
dc.typeJournal Articleen_AU
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