A new approach to nuclear level densities: The QRPA plus boson expansion

Goriely, S. and Hilaire, S. and Péru, S. and Gosselin(, G. (2024) A new approach to nuclear level densities: The QRPA plus boson expansion. Il nuovo cimento C, 47 (2). pp. 1-8. ISSN 1826-9885

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Abstract

Nuclear level densities play a key role in many nuclear applications. To go beyond the usual particle-independent approximation, a conceptually new approach based on the boson expansion of QRPA excitations is described. The calculated nuclear level densities are shown to follow an energy dependence close to a constant-temperature formula at energies above a few MeV, but present a rather narrow spin distribution. A quite remarkable agreement is obtained with experimental s-wave resonance spacings and Oslo data, at least for the 48 even-even nuclei considered in the present study.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 20 May 2024 14:25
Last Modified: 20 May 2024 14:25
URI: http://eprints.bice.rm.cnr.it/id/eprint/22915

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