dc.creatorMaul, Lance
dc.creatorMarquez Damian, Jose Ignacio
dc.creatorBraoudakis, George
dc.creatorHo, Mark
dc.creatorYeoh, Guan Heng
dc.date.accessioned2020-03-18T13:50:07Z
dc.date.accessioned2022-10-15T11:21:42Z
dc.date.available2020-03-18T13:50:07Z
dc.date.available2022-10-15T11:21:42Z
dc.date.created2020-03-18T13:50:07Z
dc.date.issued2018-11
dc.identifierMaul, Lance; Marquez Damian, Jose Ignacio; Braoudakis, George; Ho, Mark; Yeoh, Guan Heng; Perturbation scheme for estimating uncertainties in thermal scattering cross sections of water; Pergamon-Elsevier Science Ltd; Annals of Nuclear Energy; 121; 11-2018; 232-249
dc.identifier0306-4549
dc.identifierhttp://hdl.handle.net/11336/99970
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4380266
dc.description.abstractNeutron-moderator scattering interactions in the thermal energy range are often treated with specialised cross section data derived from the Thermal Scattering Law S(α,β). This scattering law is calculated based on theoretical and experimental models that describe the structure and dynamics of the principle moderator molecule. In this work, a perturbation scheme based on the Total Monte Carlo method is described and the uncertainties of the parameters used to calculate S(α,β) for H in H2O and D and O in D2O from the ENDF/B-VIII.0 library were estimated and propagated through to the cross sections and to an integral criticality scenario in the OPAL Reactor, Sydney Australia, using the transport code Serpent. The calculated uncertainties in the total cross sections are in reasonable agreement with experimental data and provide a basis for future model refinement; uncertainties in several parameters used in the LEAPR of NJOY were identified as critical to specific energy regions and behaviours of the total cross sections. The effect on criticality of these uncertainties was found to be 48 pcm and 41 pcm for H2O and D2O, respectively, within the OPAL Reactor during a low-power configuration.
dc.languageeng
dc.publisherPergamon-Elsevier Science Ltd
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.anucene.2018.07.020
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0306454918303682
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCROSS SECTIONS
dc.subjectPERTURBATION
dc.subjectTHERMAL SCATTERING
dc.subjectUNCERTAINTIES
dc.titlePerturbation scheme for estimating uncertainties in thermal scattering cross sections of water
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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