Low-Energy E1 Strength Distributions of {sup 68}Ni

We study the effects of the coupling between one- and two-phonon components of the wave functions on the low-energy electric dipole response of {sup 6}8Ni in a microscopic model based on an effective Skyrme interaction SLy5. The finite rank separable approach for the quasiparticle random phase appro...

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Bibliographic Details
Published in:Physics of particles and nuclei 2019-09, Vol.50 (5)
Main Authors: Arsenyev, N. N., Severyukhin, A. P., Dubna State University, Dubna, Voronov, V. V., Van Giai, Nguyen
Format: Article
Language:English
Subjects:
ELECTRIC DIPOLES
NICKEL 68
NUCLEAR PHYSICS AND RADIATION PHYSICS
RANDOM PHASE APPROXIMATION
SKYRME POTENTIAL
WAVE FUNCTIONS
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Summary:We study the effects of the coupling between one- and two-phonon components of the wave functions on the low-energy electric dipole response of {sup 6}8Ni in a microscopic model based on an effective Skyrme interaction SLy5. The finite rank separable approach for the quasiparticle random phase approximation is used. The effect of phonon-phonon coupling leads to the fragmentation of the E1 strength to a lower energy and improves the agreement with available experimental data.
ISSN:1063-7796
1531-8559
DOI:10.1134/S1063779619050034