TY  - JOUR
AU  - Agramunt, J. et al
AU  - Tain, J. L.
AU  - Albiol, F.
AU  - Algora, A.
AU  - Domingo-Pardo, C.
AU  - Jordan, M. D.
AU  - Rubio, B.
AU  - Tarifeño-Saldivia, A.
AU  - Valencia, E.
PY  - 2016
DA  - 2016//
TI  - Characterization of a neutron-beta counting system with beta-delayed neutron emitters
T2  - Nucl. Instrum. Methods Phys. Res. A
JO  - Nuclear Instruments & Methods in Physics Research A
SP  - 69
EP  - 78
VL  - 807
PB  - Elsevier Science Bv
KW  - Beta-delayed neutron emission probability
KW  - Neutron and beta counters
KW  - Self-triggered digital data acquisition system
KW  - Geant4 simulations
AB  - 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)%.
SN  - 0168-9002
UR  - https://doi.org/10.1016/j.nima.2015.10.082
DO  - 10.1016/j.nima.2015.10.082
LA  - English
N1  - WOS:000365596200010
ID  - Agramunt_etal2016
ER  -