Low-Lying 2+ states in neutron-rich oxygen isotopes in quasiparticle random phase approximation

Preprint

21 July 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-th/9907080

Abstract

The properties of the low-lying, collective 2+ states in neutron-rich oxygen isotopes are investigated in the framework of self-consistent microscopic models with effective Skyrme interactions. In RPA the excitation energies E2+ can be well described but the transition probabilities are much too small as compared to experiment. Pairing correlations are then accounted for by performing quasiparticle RPA calculations. This improves considerably the predictions of B(E2) values and it enables one to calculate more reliably the ratios Mn/Mp of neutron-to-proton transition amplitudes. A satisfactory agreement with the existing experimental values of Mn/Mp is obtained.

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Version 1, 1999-07-21, ArXiv
Published version: Physics Letters B, 472 (3-4), 253.

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