Shape-excited states of 28Si

Kulkarni, D. R. ; Pandya, S. P. (1973) Shape-excited states of 28Si Pramana - Journal of Physics, 1 (6). pp. 269-273. ISSN 0304-4289

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The Hartree-Fock (HF) minima for the nucleus 28Si were obtained for the prolate, oblate and spherical shapes using the interaction obtained by Preedom and Wildenthal. The interaction gives rise to large energy separation between the prolate and the oblate shapes. The spherical solution is just 2 MeV above the lowest HF (oblate) minimum. The spectrum projected from the oblate HF state is in good agreement with the experimental spectrum. The transition probabilities for the different energy levels also agree reasonably well. The configuration mixing calculations performed on the basis of states projected from the three shapes indicate that there is no significant mixing of different projected states. The second 02+ state, thus obtained, corresponds to the third 03+ state in the experimental spectrum and stems dominantly from the spherical HF state. It is seen that the structure of the energy levels of 28Si, especially the second 02+ level is very sensitive to the two body interaction. The results are compared with those obtained using the renormalised interaction of Kuo.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Nuclear Spectroscopy; Shape Excitations; 28Si
ID Code:35547
Deposited On:11 Apr 2011 11:05
Last Modified:17 May 2016 18:29

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