Workshop on β-decay and Charge-exchange Reactions for Nuclear-astrophysics

Sep
20
2019
Sep
22
2019

Event Location
The University of Hong Kong

Event Hosted By
JINA-CEE

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Transitions mediated by the weak interaction play important roles in a wide variety of astrophysical phenomena. The accurate description of beta decays and electron captures are necessary for modelling the evolution of stars, the description of nucleosynthesis upon their cataclysmic demise, for example in neutron-star mergers and core-collapse supernovae, and the interpretation of multi-messenger signals from such events. A wide variety of β-decay and electron-capture (EC) data are needed for use in astrophysical modelling. To acquire these data, a variety of experimental techniques can be applied. β / EC-decay measurements provide direct information, but only within a limited Q-value window. Charge-exchange data provide an indirect way to obtain the relevant weak interaction rates up to high excitation energies. A combination of the two are needed to benchmark and guide the development of theoretical models for transitions mediated by the weak force. Such theoretical models are necessary to estimate the weak rates for large sets of nuclei, and at astrophysical temperatures.