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RESEARCH PRODUCT

Development of a Reference Database for Beta-Delayed Neutron Emission

Shuntaro ChibaIvan BorzovIvan BorzovJ. L. TainIris DillmannIris DillmannP. DimitriouM. EstienneD. GremyachkinNicholas ScielzoA. Sanchez-caballeroX. HuangD. Cano-ottM. NarbonneAlejandro AlgoraGaurab MukherjeeRobert GrzywaczRobert GrzywaczVladimir M. PiksaikinDaniela FolignoMiguel MadurgaTomislav MarketinE. A. MccutchanK. P. RykaczewskiFutoshi MinatoB.c. RascoMarco VerpelliA. EgorovLydie GiotKaushik BanerjeeBalraj SinghAlejandro SonzogniK.v. MitrofanovM. FallotP. RomojaroE. Mendoza

subject

Nuclear and High Energy PhysicsFissile material010308 nuclear & particles physicsNeutron emissionAstrophysics::High Energy Astrophysical PhenomenaAggregate (data warehouse)Nuclear TheoryNuclear dataFOS: Physical sciences[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciencesNuclear physicsBeta (plasma physics)0103 physical sciencesReference databaseEnvironmental scienceNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentDelayed neutronNuclear Experiment

description

Beta-delayed neutron emission is important for nuclear structure and astrophysics as well as for reactor applications. Significant advances in nuclear experimental techniques in the past two decades have led to a wealth of new measurements that remain to be incorporated in the databases. We report on a coordinated effort to compile and evaluate all the available beta-delayed neutron emission data. The different measurement techniques have been assessed and the data have been compared with semi-microscopic and microscopic-macroscopic models. The new microscopic database has been tested against aggregate total delayed neutron yields, time-dependent group parameters in 6-and 8-group re-presentation, and aggregate delayed neutron spectra. New recommendations of macroscopic delayed-neutron data for fissile materials of interest to applications are also presented. The new Reference Database for Beta-Delayed Neutron Emission Data is available online at: http://www-nds.iaea.org/beta-delayed-neutron/database.html.

yearjournalcountryeditionlanguage
2021-02-01
https://dx.doi.org/10.48550/arxiv.2102.01165