Decay of 0 2 + states in88,92,94Zr andE0 systematics of Zr isotopes

Julin, R.; Kantele, J.; Luontama, M.; Passoja, A.

doi:10.1007/bf01420272

Z Physik A

1981

DOI: 10.1007/bf01420272

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Decay of 0 2 + states in88,92,94Zr andE0 systematics of Zr isotopes

R. Julin

J. Kantele

M. Luontama

et al.

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1982

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Cited by 18 publications

(1 citation statement)

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“…90 Zr Warwick et al[28], Garrett et al[29] 92 Zr Baglin [17], Sugawara et al[30] 94 Zr Abriola and Sonzogni [18], Chakraborty et al[31], Peters et al[32], Scheikh Obeid et al[33], Elhami et al[34], Julin et al[35] 96 Zr Abriola and Sonzogni [19], Kumbartzki et al[36], Alanssari et al[37], Kremer et al[38], Pietralla et al[39], Kumbartzki et al[36], Sazonov et al[40], Witt et al[41] …”

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confidence: 99%

Quest of shape coexistence in Zr isotopes

García‐Ramos

Heyde

2019

Phys. Rev. C

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Background: The mass region with A ≈ 100 and Z ≈ 40 is known to experience a sudden onset of deformation. The presence of the subshell closure Z = 40 makes feasible to create particle-hole excitations at a moderate excitation energy and, therefore, likely intruder states could be present in the low-lying spectrum. In other words, shape coexistence is expected to be a key ingredient to understand this mass region.Purpose: The aim of this work is to describe excitation energies, transition rates, radii, and twoneutron separation energies for the even-even 94−110 Zr nuclei and, moreover, to obtain information about wave functions and deformation.Method: The interacting boson model with configuration mixing will be the framework to study the even-even Zr nuclei, considering only two types of configurations: 0particle-0hole and 2particle-2hole excitations. On one hand, the parameters appearing in the Hamiltonian and in the E2 transition operator are fixed trough a least-squares fit to the whole available experimental information. On the other hand, once the parameters have been fixed, the calculations allow to obtain a complete set of observables for the whole even-even Zr chain of isotopes.Results: Spectra, transition rates, radii, ρ 2 (E0), and two-neutron separation energies have been calculated and a good agreement with the experimental information has been obtained. Moreover, a detailed study of the wave function has been conducted and mean-field energy surfaces and deformation have been computed too.Conclusions: The importance of shape coexistence has been shown to correctly describe the A ≈ 100 mass area for even-even Zr nuclei. This work confirmed the rather spherical nature of the ground state of 94−98 Zr and its deformed nature for 100−110 Zr isotopes. The sudden onset of deformation in 100 Zr is owing to the rapid lowering of a deformed (intruder) configuration which is high-lying in lighter isotopes. 21.60.Fw

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confidence: 99%

Quest of shape coexistence in Zr isotopes

García‐Ramos

Heyde

2019

Phys. Rev. C

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Nuclear Data Sheets for A = 92

Baglin

1992

Nuclear Data Sheets

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A method for centroid-shift time measurements with magnetic plus Si(Li) combination conversion-electron spectrometer

Kantele

Julin

Luontama

et al. 1982

Nuclear Instruments and Methods in Physics Research

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Decay of 0 2 + states in88,92,94Zr andE0 systematics of Zr isotopes

Cited by 18 publications

References 21 publications

Quest of shape coexistence in Zr isotopes

Quest of shape coexistence in Zr isotopes

Nuclear Data Sheets for A = 92

A method for centroid-shift time measurements with magnetic plus Si(Li) combination conversion-electron spectrometer

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