6533b7d5fe1ef96bd1265470
RESEARCH PRODUCT
Characterization of a neutron–beta counting system with beta-delayed neutron emitters
J. AgramuntJ.l. TainM.b. Gómez-hornillosA.r. GarciaF. AlbiolA. AlgoraR. Caballero-folchF. CalviñoD. Cano-ottG. CortésC. Domingo-pardoTommi EronenW. GelletlyDmitry GorelovV. GorlychevJani HakalaAri JokinenM.d. JordanAnu KankainenVeli KolhinenL. KucukT. MartinezP.j.r. MasonIain MooreHeikki PenttiläZs. PodolyákC. PretelMikael ReponenA. RiegoJuho RissanenB. RubioAntti SaastamoinenA. Tarifeño-saldiviaE. Valenciasubject
beta-delayed neutron emission probabilityAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeant4 simulationsself-triggered digital data acquisition systemNuclear Experimentneutron and beta countersdescription
A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known β-delayed neutron emission properties. The setup consists of BELEN-20, a 4π neutron counter with twenty 3He proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for β counting and a selftriggering digital data acquisition system. The use of delayed-neutron precursors with different neutron emission windows allowed the study of the effect of energy dependency on neutron, β and β-neutron rates. The observed effect is well reproduced by Monte Carlo simulations. The impact of this dependency on the accuracy of neutron emission probabilities is discussed. A new accurate value of the neutron emission probability for the important delayed-neutron precursor 137I was obtained, Pn = 7.76(14)%. peerReviewed
year | journal | country | edition | language |
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2016-01-01 |