%0 Journal Article
%T Characterization of a neutron-beta counting system with beta-delayed neutron emitters
%A Agramunt, J. et al
%A Tain, J. L.
%A Albiol, F.
%A Algora, A.
%A Domingo-Pardo, C.
%A Jordan, M. D.
%A Rubio, B.
%A Tarifeño-Saldivia, A.
%A Valencia, E.
%J Nuclear Instruments & Methods in Physics Research A
%D 2016
%V 807
%I Elsevier Science Bv
%@ 0168-9002
%G English
%F Agramunt_etal2016
%O WOS:000365596200010
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2481), last updated on Tue, 13 Oct 2020 12:45:22 +0000
%X A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known beta-delayed neutron emission properties. The setup consists of BELEN-20, a 4 pi-neutron counter with twenty He-3 proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for beta counting and a self-triggering 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, beta and beta-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 I-137 was obtained, P-n = 7.76(14)%.
%K Beta-delayed neutron emission probability
%K Neutron and beta counters
%K Self-triggered digital data acquisition system
%K Geant4 simulations
%R 10.1016/j.nima.2015.10.082
%U https://doi.org/10.1016/j.nima.2015.10.082
%P 69-78