ß-delayed neutron emission of r-process nuclei at the N¿=¿82 shell closure

Theoretical models of ß-delayed neutron emission are used as crucial inputs in r-process calculations. Benchmarking the predictions of these models is a challenge due to a lack of currently available experimental data. In this work the ß-delayed neutron emission probabilities of 33 nuclides in the i...

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Detalles Bibliográficos
Autores: Hall, O, Davinson, T, Estrade, A, Lorusso, G., Montes, F., Nishimura, Shunji, Phong, V.H., Agramunt Ros, Jorge, Woods, Phil J., Ahn, D.S., Algora, A., Baba, H., Calviño Tavares, Francisco|||0000-0002-7198-4639, Cortés Rossell, Guillem Pere|||0000-0002-3648-5826
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/362048
Acceso en línea:https://hdl.handle.net/2117/362048
https://dx.doi.org/10.1016/j.physletb.2021.136266
Access Level:acceso abierto
Palabra clave:Nuclear physics
Neutrons--Capture
ß-delayed
Neutron emissionr-process
Astrophysical
Física nuclear
Neutrons--Captura
Àrees temàtiques de la UPC::Física
Descripción
Sumario:Theoretical models of ß-delayed neutron emission are used as crucial inputs in r-process calculations. Benchmarking the predictions of these models is a challenge due to a lack of currently available experimental data. In this work the ß-delayed neutron emission probabilities of 33 nuclides in the important mass regions south and south-west of 132Sn are presented, 16 for the first time. The measurements were performed at RIKEN using the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array. The values presented constrain the predictions of theoretical models in the region, affecting the final abundance distribution of the second r-process peak at .

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