Speaker
Description
The recent beta delayed neutron emission experiments near 132Sn with VANDLE, and BRIKEN arrays enabled detailed studies of nuclei with very large Qb and small Sn. This allows exploring the underlying physics more thoroughly. The modeling of beta-delayed neutron emission requires the knowledge of beta-decay strength distribution and neutron emission model. The latter customarily uses the Hauser-Feshbach (HF) model, which implies neutron emission from the compound nucleus. Multi-neutron emission studies near 78Ni appear to be well described well using this approach, although level densities have to be adjusted to fit the experiment. However, in the decay of 134In, we observed a substantial discrepancy between the model prediction and experiment. This leads us to question the universality of the HF treatment and the need to development of more sophisticated models of beta-delayed neutron emission.
