Speaker
Artemis Spyrou
(NSCL/FRIB)
Description
Beta-decay properties are important nuclear input for r-process calculations. A large number of experiments focus on the measurement of beta-decay half-lives and neutron emission probabilities. A new effort has started at the NSCL to go beyond measuring these integral quantities and investigate further the details of the beta-decay intensity distribution for r-process nuclei. This distribution depends strongly on the nuclear structure, and therefore such measurements can provide a sensitive comparison to theoretical models. Here we will report on the first measurements of beta-decay intensity in the mass region around A=70, using the technique of Total Absorption Spectroscopy. The case of 70Co will be discussed where among other surprising features, a strong neutron-gamma competition above the neutron threshold was observed. The impact on r-process calculations will also be discussed.
Primary author
Artemis Spyrou
(NSCL/FRIB)