Exploring single-hole state evolution near the $N=50$ shell closure

It is of interest to understand how nuclear structure evolves near the $N=50$ closed shell and towards more neutron-deficient nuclei. To obtain a more clear picture of the systematics of neutron-hole states in $N=49$ isotones, $^{83}_{34}$Se and $^{85}_{36}$Kr were produced through the one-neutron stripping $(p,d)$ reaction to populate single-neutron-hole states. The experiment was performed at the National Superconducting Cyclotron Laboratory with 35 MeV/u $^{84}$Se and 45.5 MeV/u $^{86}$Kr beams that impinged on C$_2$H$_4$ targets. The charged-particle detectors, HiRA, were used to identify emitted deuterons and measure their angles and energies; heavier recoils were identified and analyzed by the S800 Spectrograph. Preliminary PID maps, Q-value spectra and angular distribution will be presented.