Speaker
Description
An efficient neutron detection system with good energy resolution is required to correctly characterize decays of neutron-rich nuclei where beta-delayed neutron emission is a dominant decay mode. Precision neutron spectroscopy instrumentation is essential to probe nuclear structure effects in neutron-rich nuclei in new generation radioactive beam facilities. A new high-resolution neutron detector, Neutron dEtector with Xn Tracking(NEXT), has been constructed, characterized, and tested in decay and reaction experiments. The interaction position localization capabilities enabled improvement in energy resolution and detection efficiency in the neutron time-of-flight measurement. First measurements were performed with beta-delayed neutron emitters using NEXT at Argonne National Laboratory(ANL) and National Superconducting Cyclotron Laboratory(NSCL). The results from the decay measurement of nitrogen and oxygen isotopes near the neutron drip line will be presented.