Effective interactions and charges in 58Ni

Pandya, S. P. ; Singh, B. P. (1974) Effective interactions and charges in 58Ni Pramana - Journal of Physics, 3 (2). pp. 61-73. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/3/2/61-73/v...

Related URL: http://dx.doi.org/10.1007/BF02847115


The structure of the low-lying states of 58Ni has been calculated in shell model by assuming an inert 56Ni core plus two valence nucleons in the p3/2, f5/2 and p1/2 orbitals. The two-body matrix elements are first expressed in terms of seven radial matrix elements and these are then parametrized to give best fit between the computed and the observed energies of the levels below 4 MeV. The wave-functions obtained using these two-body matrix elements are used to study the concept of effective charges. It is found that a single effective charge is not sufficient to predict the B(E2) rates equally well for the thirteen known transitions for which experimental values are available. Assumption of state-dependent effective charges gives a far better agreement. An analysis using wave functions obtained with Kuo's two-body matrix elements also gives a similar result.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:58Ni; Shell Model; Effective Operators; Nuclear Spectroscopy; E2 Transition Rates
ID Code:35543
Deposited On:11 Apr 2011 11:05
Last Modified:17 May 2016 18:29

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