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Shape coexistence and low-lying collective states in A ≈ 100 Zr nuclei

par Skalski, Janusz;Heenen, Paul-Henri ;Bonche, Paul
Référence Nuclear physics. A, 559, 2, page (221-238)
Publication Publié, 1993-06

Article révisé par les pairs

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Résumé :

Collective quadrupole and octupole excitations in even 94-00Zr nuclei are studied within the fully microscopic generator-coordinate method using a basis generated by the selfconsistent Hartree-Fock BCS method. Results with the effective interaction SkM* correctly describe the experimentally observed spherical to deformed shape transition at A = 100. Properties of low-lying O+, 2+ and 3- states are analysed. The measured B(E3) value of 65 single-particle units in 96Zr is underestimated in our calculations. Various aspects of our theoretical approach are discussed, including Skyrme force parametrization, treatment of pairing and one- versus two-dimensional description of octupole excitations. © 1993.