Speaker
Description
Neutron-rich nuclei near the N=50 closed shell are of particular interest for their role in the rapid neutron capture process (r-process) of heavy element nucleosynthesis. Nuclear properties such as neutron capture rates and spectroscopic properties are crucial inputs to constrain theoretical models and improve their predictive power to properties of exotic, neutron-rich isotopes where little to no experimental information is known. In the region of N=50-60, a different trend of shell evolution is hinted for the Kr isotopes compared to the neighboring Zr and Sr isotopic chains, however there is limited information available for neutron-rich Kr isotopes. The systematics of the excited 0+ state along these isotopic chains would provide insight into the neutron orbital occupancies and hence shell evolution in neutron-rich Kr isotopes. To address the unknown excited 0+ states in $^{94}$Kr and $^{92}$Kr, the neutron transfer reactions $^{93}$Kr(d,p) and $^{93}$Kr(d,t) were performed at the ISAC II facility at TRIUMF using the ISAC Charged Particle Spectroscopy Station (IRIS). Information about the experiment and preliminary results will be presented.
