Strong γ-ray emission from neutron unbound states populated in β-decay: Impact on (n,γ) cross-section estimates

Autor: Tain J.L., Guadilla V., Valencia E., Algora A., Zakari-Issoufou A.-A., Rice S., Meur L. Le, Agramunt J., Äystö J., Batist L., Bowry M., Briz J.A., Bui V.M., Caballero-Folch R., Cano-Ott D., Cucoanes A., Elomaa V.-V., Eronen T., Estevez E., Estienne M., Fallot M., Farrelly G.F., Fraile L.M., Ganioglu E., Garcia A.R., Gelletly W., Gómez-Hornillos B., Gorelov D., Gorlychev V., Hakala J., Jokinen A., Jordan M.D., Kankainen A., Kolhinen V.S., Kondev F.G., Koponen J., Lebois M., Martínez T., Mason P., Mendoza E., Monserrate M., Montaner-Pizá A., Moore I., Nacher E., Orrigo S.E.A., Penttilä H., Podolyák Zs., Pohjalainen I., Porta A., Regan P.H., Reinikainen J., Reponen M., Rinta-Antila S., Rissanen J., Rubio B., Rytkönen K., Shiba T., Sonnenschein V., Sonzogni A.A., Vedia V., Voss A., Wilson J.N.
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: EPJ Web of Conferences, Vol 146, p 01002 (2017)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/201714601002
Popis: Total absorption gamma-ray spectroscopy is used to measure accurately the intensity of γ emission from neutron-unbound states populated in the β-decay of delayed-neutron emitters. From the comparison of this intensity with the intensity of neutron emission one can deduce information on the (n,γ) cross section for unstable neutron-rich nuclei of interest in r process abundance calculations. A surprisingly large γ branching was observed for a number of isotopes. The results are compared with Hauser-Feshbach calculations and discussed.
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