Development of a Reference Database for Beta-Delayed Neutron Emission

P. Dimitriou; I. Dillmann; B. Singh; V. Piksaikin; K. P. Rykaczewski; J. L. Tain; A. Algora; K. Banerjee; I. N. Borzov; D. Cano-Ott; S. Chiba; M. Fallot; D. Foligno; R. Grzywacz; X. Huang; T. Marketin; F. Minato; G. Mukherjee; B. C. Rasco; A. Sonzogni; M. Verpelli; A. Egorov; M. Estienne; L. Giot; D. Gremyachkin; M. Madurga; E. A. McCutchan; E. Mendoza; K. V. Mitrofanov; M. Narbonne; P. Romojaro; A. Sanchez-Caballero; N. D. Scielzo

arXiv · 2102.01165

Development of a Reference Database for Beta-Delayed Neutron Emission

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Abstract

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.

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P. Dimitriou, I. Dillmann, B. Singh, V. Piksaikin, K. P. Rykaczewski, J. L. Tain, A. Algora, K. Banerjee, I. N. Borzov, D. Cano-Ott, S. Chiba, M. Fallot, D. Foligno, R. Grzywacz, X. Huang, T. Marketin, F. Minato, G. Mukherjee, B. C. Rasco, A. Sonzogni, M. Verpelli, A. Egorov, M. Estienne, L. Giot, D. Gremyachkin, M. Madurga, E. A. McCutchan, E. Mendoza, K. V. Mitrofanov, M. Narbonne, P. Romojaro, A. Sanchez-Caballero, N. D. Scielzo. 2021-02-01. Development of a Reference Database for Beta-Delayed Neutron Emission. https://arxiv.org/abs/2102.01165

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