The first excited state of 16O and strongly deformed excited states in nuclei having spherical ground states

✍ Scribed by J. Hayward

• Publisher: Elsevier Science
• Year: 1966
• Weight: 955 KB
• Volume: 81
• Category: Article
• ISSN: 0029-5582
• DOI: 10.1016/s0029-5582(66)80013-5

✦ Synopsis

We have calculated the energies of a number of states in tsO and 180, as functions of the deformation of the nucleus. We used the anisotropic h.o. single-particle Hamiltonian and a Gaussian two-body interaction. Our results were very sensitive to the exchange mixture. Using the Gillet mixture a four-particle excited, strongly deformed, wave function is a good description of the 6.06 MeV state in aeO, although it probably contains rather too much collective motion. With the Soper mixture this state is not explained in our simple model since neither the two-nor the four-particle excited states have a sufficiently low energy and there is not a great deal of mixing between them. The two-particle excited state of 180 also comes down very low if we use the Gillet mixture, and deform, but not if we use the Soper mixture.

In general, strong exchange mixtures increase the energy gain on deformation and the position of the equilibrium deformation.