Elsevier

Nuclear Physics A

Volume 445, Issue 2, 25 November 1985, Pages 245-262
Nuclear Physics A

Effect of residual interactions on nuclear level densities

https://doi.org/10.1016/0375-9474(85)90070-3Get rights and content

Abstract

We calculate the contribution of residual interactions to nuclear level densities in the framework of the random-phase approximation. We first investigate the case of the schematic model for which analytical formulae can be worked out. More realistic calculations are performed numerically for 40Ca and 56Ni using oscillator wave functions and a zero-range interaction. In 56Ni it is found that residual interactions increase level densities significantly in the random-phase approximation, while small corrections are found in 40Ca. A comparison with the results of second-order perturbation theory is presented.

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