Shape coexistence in the A ∼ 70 region including neutron-proton interaction and unnatural-parity correlations in the mean field

doi:10.1016/0375-9474(92)90084-W

Nuclear Physics A

Volume 549, Issue 3, 16 November 1992, Pages 352-374

https://doi.org/10.1016/0375-9474(92)90084-W Get rights and content

Abstract

The recent investigations of the shape-coexistence phenomena dominating the structure of the even-even nuclei in the A ∼ 70 mass region are extended by introducing neutron-proton and unnatural-parity correlations in the mean field, while keeping the time-reversal invariance and the axial-symmetry restrictions. Selected low-lying states in ⁶⁸Ge, ⁷²Ge and ⁷²Kr nuclei are investigated within the FED VAMPIR or EXCITED FED VAMPIR approaches. The results obtained using real and complex mean fields in a relatively large model space are compared with the experimental data. Similar qualitative features are obtained with both real and complex calculations concerning the evolution of the shape transition and shape coexistence with increasing spin and excitation energy. The results obtained indicate the importance of the new type of correlations introduced by the complex mean fields.

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Shape coesxistence and center-of-mass effects in N = Z medium mass nuclei
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^☆: Work supported by the Bundesministerium für Forschung und Technologie, the Internationales Büro des KfK Karlsruhe, Germany, and the Ministry of Trade and Industry, Finland.

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Nuclear Physics A

Abstract

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Cited by (30)

Thermal properties of N = 40 isotones

On the use of general symmetry-projected Hartree-Fock-Bogoliubov configurations in variational approaches to the nuclear many-body problem

Shape coesxistence and center-of-mass effects in N = Z medium mass nuclei

Microscopic aspects of shape coexistence in <sup>72</sup>Kr and <sup>74</sup>Kr

Shape coexistence phenomena in medium mass nuclei

Structure of <sup>68</sup>As studied via the <sup>12</sup>C(<sup>58</sup>Ni,pn) reaction

Shape coexistence in the A ∼ 70 region including neutron-proton interaction and unnatural-parity correlations in the mean field☆

Abstract

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