r Process (n, γ) Rate Constraints from the γ Emission of Neutron Unbound States in β decay
Tain, J. L., Guadilla, V., Valencia, E., Algora, A., Zakari-Issoufou, A.-A., Rice, S., 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., . . . Wilson, J. N. (2017). r Process (n, γ) Rate Constraints from the γ Emission of Neutron Unbound States in β decay. In NIC 2016 : Proceedings of the 14th International Symposium on Nuclei in the Cosmos (Article 010607). Physical Society of Japan. JPS Conference Proceedings, 14. https://doi.org/10.7566/JPSCP.14.010607
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© the Authors, 2017. This is an open access article distributed under the terms of the Creative Commons License.
Total absorption gamma-ray spectroscopy is used to measure accurately the intensity of γγ emission from neutron-unbound states populated in the ββ-decay of delayed-neutron emitters. From the comparison of this intensity with the intensity of neutron emission a constraint on the (n, γγ) cross section for highly unstable neutron-rich nuclei can be deduced. A surprisingly large γγ branching was observed for a number of isotopes which might indicate the need to increase by a large factor the Hauser-Feshbach (n, γγ) cross-section estimates that impact on r process abundance calculations.
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Physical Society of JapanParent publication ISBN
978-4-89027-118-4Conference
Nuclei in the CosmosIs part of publication
NIC 2016 : Proceedings of the 14th International Symposium on Nuclei in the CosmosKeywords
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Except where otherwise noted, this item's license is described as © the Authors, 2017. This is an open access article distributed under the terms of the Creative Commons License.