Kr78,80,82(d, p)Kr79,81,83reactions

Abstract

The level structures of ${}_{}{}^{79,81,83}{}_{}{}^{}\mathrm{Kr}$ have been investigated via the ($d, p$) stripping reaction using isotopically enriched gas targets at an incident deuteron energy of 11 MeV. Proton groups leading to about 14 states with excitation energies up to approximately 3 MeV have been identified in each of the above nuclei. Differential cross sections were measured from 20° to 160°, and were fitted with zero-range distorted-wave-Born-approximation calculations. Excitation energies, $l$ values, spectroscopic factors, and the implied values of $J^{\pi }$ are given. Comparisons are made with states in the selenium and germanium isotopes having the same number of neutrons and, respectively, one and two protons less than the krypton isotopes. Comparisons are also made between the present work and studies of ${}_{}{}^{79}{}_{}{}^{}\mathrm{Kr}$ via ${}_{}{}^{79}{}_{}{}^{}\mathrm{Rb}$ decay measurements. Two unresolved discrepancies are found between the two sets of measurements.