Characterization of a neutron-beta counting system with beta-delayed neutron emitters
| Autor: | V. Gorlychev, Dmitry Gorelov, W. Gelletly, M. B. Gómez-Hornillos, Juho Rissanen, Zs. Podolyák, D. Cano-Ott, G. Cortes, R. Caballero-Folch, Iain Moore, Anu Kankainen, P. J. R. Mason, C. Domingo-Pardo, Antti Saastamoinen, A. Riego, J. L. Tain, Tommi Eronen, F. Calviño, Ari Jokinen, T. Martinez, B. Rubio, M. D. Jordan, Heikki Penttilä, Mikael Reponen, C. Pretel, Ariel Tarifeño-Saldivia, E. Valencia, A. Algora, A. R. García, H. Hakala, J. Agramunt, L. Kucuk, F. Albiol, V. Kolhinen |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya. Departament de Física, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group, Universitat Politècnica de Catalunya. NERG - Grup de Recerca d'Enginyeria Nuclear |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Neutron emission Astrophysics::High Energy Astrophysical Phenomena Nuclear Theory Montecarlo Mètode de 01 natural sciences Self-triggered digital data acquisition system Nuclear physics Neutron and beta counters 0103 physical sciences Geant4 simulations Neutron cross section Neutron detection Neutron self-triggered digital data acquisition system 010306 general physics Nuclear Experiment Instrumentation Beta-delayed neutron emission probability Physics Bonner sphere beta-delayed neutron emission probability Energies::Energia nuclear [Àrees temàtiques de la UPC] Neutrons ta114 ta213 010308 nuclear & particles physics Neutron stimulated emission computed tomography Neutron temperature Monte Carlo method Física::Física molecular [Àrees temàtiques de la UPC] Delayed neutron neutron and beta counters |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | 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 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, 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, P n = 7.76 ( 14 ) %. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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