Development of a Reference Database for Beta-Delayed Neutron Emission

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

doi:10.1016/j.nds.2021.04.006

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DOE OSTI · 1778917

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. In this work, we report on a coordinated effort to compile and evaluate all the available β-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.

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Dimitriou, P., Dillmann, I., Singh, B., Piksaikin, V., Rykaczewski, K. P., Tain, J. L., Algora, A., Banerjee, K., Borzov, I. N., Cano-Ott, D., Chiba, S., Fallot, M., Foligno, D., Grzywacz, R., Huang, X., Marketin, T., Minato, F., Mukherjee, G., Rasco, B. C., Sonzogni, A., Verpelli, M., Egorov, A., Estienne, M., Giot, L., Gremyachkin, D., Madurga, M., McCutchan, E. A., Mendoza, E., Mitrofanov, K. V., Narbonne, M., Romojaro, P., Sanchez-Caballero, A., Scielzo, N. D.. 2021-05-03. Development of a Reference Database for Beta-Delayed Neutron Emission. https://doi.org/10.1016/j.nds.2021.04.006

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