Abstract
The presence of not yet detected intruder states in e.g., a intruder at 9 MeV excitation would affect the shape of the -delayed spectra of and In order to test the plausibility of this assumption, shell-model calculations with up to excitations in (and up to excitations in ) were performed. With the above restrictions on the model spaces, the calculations did not yield any low-lying intruder state in Another approach—the simple deformed oscillator model with self-consistent frequencies and volume conservation—gives an intruder state in which is lower in energy than the above shell-model results, but its energy is still considerably higher than 9 MeV.
- Received 27 October 1997
DOI:https://doi.org/10.1103/PhysRevC.57.2351
©1998 American Physical Society