Strong γ-ray emission from neutron unbound states populated in β-decay: Impact on (n,γ) cross-section estimates
Tain, J. L., Guadilla, V., Valencia, E., Algora, A., Zakari-Issoufou, A.-A., Rice, S., . . . Wilson, J. N. (2017). Strong γ-ray emission from neutron unbound states populated in β-decay: Impact on (n,γ) cross-section estimates. In A. Plompen, F.-J. Hambsch, P. Schillebeeckx, W. Mondelaers, J. Heyse, S. Kopecky, . . . , & S. Oberstedt (Eds.), ND 2016 : International Conference on Nuclear Data for Science and Technology (pp. 01002). EPJ Web of Conferences, 146. EDP Sciences. doi:10.1051/epjconf/201714601002
Published inEPJ Web of Conferences;146
Rice, S. |
© The Authors, published by EDP Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0.
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.