Shape coexistence and triaxiality in nuclei near<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Zr</mml:mi><mml:mprescripts /><mml:none /><mml:mn>80</mml:mn></mml:mmultiscripts></mml:math>

Zheng, S.; Fang, Xu; Shen, Song; Liu, H. L.; Wyss, R.; Yan, Yupeng

doi:10.1103/physrevc.90.064309

Cited by 13 publications

(10 citation statements)

References 45 publications

(41 reference statements)

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“…IIIC in Ref. [15]) has been shown to be very successfully in both nuclear spectroscopy [68][69][70][71] and binding energy [15] calculations. In particular, it gives a good description of the nuclear momentum of inertia and high spin states.…”

Section: Global Calculationsmentioning

confidence: 99%

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Global calculations of microscopic energies and nuclear deformations: Isospin dependence of the spin-orbit coupling

Wyss

et al. 2015

Phys. Rev. C

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Background:The deviation between different model calculations that may occur when one goes toward regions where the masses are unknown is getting increased attention. This is related to the uncertainties of the different models which may have not been fully understood.Purpose: To explore in detail the effect of the isospin dependence of the spin-orbital force in the Woods-Saxon potential on global binding energy and deformation calculations. Method:The microscopic energies and nuclear deformations of about 1850 even-even nuclei are calculated systematically within the macroscopic-microscopic framework using three Woods-Saxon parameterizations, with different isospin dependences, which were constructed mainly for nuclear spectroscopy calculations. Calculations are performed in the deformation space (β2, γ, β4). Both the monopole and doubly stretched quadrupole interactions are considered for the pairing channel.Results: The ground state deformations obtained by the three calculations are quite similar to each other. Large differences are seen mainly in neutron-rich nuclei and in superheavy nuclei. Systematic calculations on the shapecoexisting second minima are also presented. As for the microscopic energies of the ground states, the results are also very close to each other. Only in a few cases the difference is larger than 2 MeV. The total binding energy is estimated by adding the macroscopic energy provided by the usual liquid drop model with its parameters fitted through the least square root and minimax criteria. Calculations are also compared with the results of other macroscopic-microscopic mass models.Conclusions: All the three calculations give similar values for the deformations, microscopic energies and binding energies of most nuclei. One may expect to have a better understanding of the isospin dependence of the spinorbital force with more data on proton-and neutron-rich nuclei.

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Section: Global Calculationsmentioning

confidence: 99%

“…There is a long history in nuclear physics studying the so-called shape coexistence and many prominent examples have been found [68,75,76]. It is also important for our study of radioactive alpha [77] and proton decays [65].…”

Section: Iii4 the Second Minimummentioning

confidence: 99%

Global calculations of microscopic energies and nuclear deformations: Isospin dependence of the spin-orbit coupling

Wyss

et al. 2015

Phys. Rev. C

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“…However, it is definitely not responsible for the EI closures which demand splittings much larger that the l • s one provided by the NN interactions. To fix ideas: in 48 Ca they would produce a f 7/2 − p 3/2 single particle gap equal to that in 41 Ca i.e., 2.5 MeV smaller than the observed one. A discrepancy that increases to some 4.5 MeV in 56 Ni.…”

Section: The Natural Zbm (Or Eei) Model Spacesmentioning

confidence: 99%

“…The main discrepancy with their work is in the positioning of the closed shell, which in the potential energy surface [58, Fig.2] comes some 4 MeV below the deformed minima which we attribute to underbinding of the latter due to the monopole effect described above. Other calculations for 80 Zr include [26,27,48].…”

Section: B Monopole Vs Single Particle Fieldmentioning

confidence: 99%

Nilsson-SU3 self-consistency in heavy N=Z nuclei

et al. 2015

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It is argued that there exist natural shell model spaces optimally adapted to the operation of two variants of Elliott's SU3 symmetry that provide accurate predictions of quadrupole moments of deformed states. A selfconsistent Nilsson-like calculation describes the competition between the realistic quadrupole force and the central field, indicating a remarkable stability of the quadrupole moments-which remain close to their quasi and pseudo SU3 values-as the single particle splittings increase. A detailed study of the N = Z even nuclei from 56 Ni to 96 Cd reveals that the region of prolate deformation is bounded by a pair of transitional nuclei 72 Kr and 84 Mo in which prolate ground state bands are predicted to dominate, though coexisting with oblate ones.

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“…For example, the N = Z = 40 nucleus 80 Zr is one of the most deformed nuclei known so far with a quadrupole deformation of β 2 ≈ 0.4 [5]. Total-Routhian-surface calculations have indicated that the * markus.k.vilen@student.jyu.fi g 9/2 shell plays an important role in the shape evolution, with spherical, prolate, oblate, and triaxial shapes predicted [6]. Even possible tetrahedral deformation has been proposed to exist in the region [7].…”

Section: Introductionmentioning

confidence: 99%

High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL

et al. 2019

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An upgraded ion-guide system for the production of neutron-deficient isotopes with heavy-ion beams has been commissioned at the IGISOL facility with an 36 Ar beam on a nat Ni target. It was used together with the JYFLTRAP double Penning trap to measure the masses of 82 Zr, 84 Nb, 86 Mo, 88 Tc, and 89 Ru ground states and the isomeric state 88 Tc m. Of these, 89 Ru and 88 Tc m were measured for the first time. The precision of measurements of 82 Zr, 84 Nb, and 88 Tc was significantly improved. The literature value for 86 Mo was verified. The measured states in 88 Tc were compared to shell-model calculations and additional constraints on the spins and level scheme were obtained. The masses of 82 Mo and 86 Ru have been predicted using the measured masses of their mirror partners and theoretical mirror displacement energies, resulting in more tightly bound nuclei with smaller atomic mass uncertainties than reported in the literature.

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Shape coexistence and triaxiality in nuclei nearZr80

Cited by 13 publications

References 45 publications

Global calculations of microscopic energies and nuclear deformations: Isospin dependence of the spin-orbit coupling

Global calculations of microscopic energies and nuclear deformations: Isospin dependence of the spin-orbit coupling

Nilsson-SU3 self-consistency in heavy N=Z nuclei

High-precision mass measurements and production of neutron-deficient isotopes using heavy-ion beams at IGISOL

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