Abstract
The Kr nucleus has been reinvestigated with prompt--ray-spectroscopy methods using the Gammasphere Ge array to measure rays following spontaneous fission of Cf. The order of some of the transitions, reported previously, has been changed and new levels were introduced. Angular correlation analysis allowed the assignment of spins to several levels in Kr. These data, together with the shell-model calculations, explained the near-yrast structure of Kr, which is similar to the structure of the , Sr, and Zr isotones. The regular systematics obtained for the three isotones suggests that the spin of the 2073.4-keV level in the Se isotone is different from the value reported previously. Using data from prompt -ray measurement of spontaneous fission of Cm, we reinvestigated the Se nucleus. A new candidate for the 6 level in Se has been proposed, which is supported by shell-model calculations. Energies of the 2 and 4 levels in the Zn nucleus have been predicted using a novel systematics.
15 More- Received 3 April 2013
DOI:https://doi.org/10.1103/PhysRevC.88.044314
©2013 American Physical Society