Triple shape coexistence and shape evolution in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>58</mml:mn></mml:mrow></mml:math>Sr and Zr isotopes

Petrovici, A.

doi:10.1103/physrevc.85.034337

Cited by 40 publications

(66 citation statements)

References 24 publications

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“…This transition is fairly smooth, implying a certain mixing between the two configurations. Such prolate-oblate mixing has been considered previously in 96 Sr and 98 Zr in complex excited VAMPIR calculations [74]. The maximum prolate deformations reached in the region are fully consistent with the calculations presented in Figure 9 and correspond to Q ∼ 4 eb.…”

Section: Configsupporting

confidence: 77%

Lifetime measurements and nuclear deformation in theA≈100region

et al. 2012

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The Eurogam-2 array has been used to study γ rays emitted following the spontaneous fission of a 248 Cm source. Analysis of Doppler-broadened lineshapes corresponding to transitions from excited rotational states in neutron-rich Sr, Zr, Mo, Ru and Pd fission fragments has enabled measurements of state lifetimes in these nuclei at nuclear spins of I ∼ 10. Extracted transition quadrupole moments are compared with various recent theoretical approaches, as well as with measurements at lower spin, and an interpretation of the data is made within the context of prolate-oblate shape competition in this region.

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Section: Configsupporting

confidence: 77%

Lifetime measurements and nuclear deformation in theA≈100region

et al. 2012

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“…These calculations were employed for the description of the shape coexistence phenomena in A ≈ 100 [44] including Gamow-Teller strength distributions [45]. The results for the strength obtained using the Bonn-A and Bonn-CD interactions taken from [19] are shown in Table II already compared in [19] with the B(GT) distribution obtained from the high-resolution study of Piqueras et al [31] with a remarkably good agreement.…”

Section: Comparison With Predictions From Theoretical Calculationsmentioning

confidence: 87%

Shape study of theN=ZnucleusKr72viaβdecay

et al. 2015

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The β decay of the N = Z nucleus 72 Kr has been studied with the total absorption spectroscopy technique at ISOLDE (CERN). A total B(GT) = 0.79(4)g 2 A /4π has been found up to an excitation energy of 2.7 MeV. The B(GT) distribution obtained is compared with predictions from state-of-the-art theoretical calculations to learn about the ground state deformation of 72 Kr. Although a dominant oblate deformation is suggested by direct comparison with quasiparticle random phase approximation (QRPA) calculations, beyond-mean-field and shell-model calculations favor a large oblate-prolate mixing in the ground state.

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“…In the case of 96 Sr, our results can be further compared to those obtained using the complex excited VAMPIR approach with a realistic effective interaction based on the Bonn A potential in a large model space [40]. These calculations predict a B(E2,2…”

Section: Discussionmentioning

confidence: 99%

“…Again, the predictions of these two fundamentally different models are remarkably consistent and call for a systematic comparison along isotopic chains between the two models. A Table IX, and in addition those for J = 0 are compared to available experimental data and excited VAMPIR [40] and 5DCH (PC-PK1) [54] predictions in Tables VII and VIII. In 96 Sr, a large transition strength is predicted between the 0 + 2 state and the ground state by both our calculation and the VAMPIR approach.…”

Section: Discussionmentioning

confidence: 99%

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Low-energy Coulomb excitation of Sr96,98 beams

Clément¹,

Zielińska²,

Péru³

et al. 2016

Phys. Rev. C

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The structure of neutron-rich 96,98 Sr nuclei was investigated by low-energy safe Coulomb excitation of radioactive beams at the REX-ISOLDE facility, CERN, with the MINIBALL spectrometer. A rich set of transitional and diagonal E2 matrix elements, including those for non-yrast structures, has been extracted from the differential Coulomb-excitation cross sections. The results support the scenario of a shape transition at N = 60, giving rise to the coexistence of a highly deformed prolate and a spherical configuration in 98 Sr, and are compared to predictions from several theoretical calculations. The experimental data suggest a significant contribution of the triaxal degree of freedom in the ground state of both isotopes. In addition, experimental information on low-lying states in 98 Rb has been obtained.

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Triple shape coexistence and shape evolution in theN=58Sr and Zr isotopes

Cited by 40 publications

References 24 publications

Lifetime measurements and nuclear deformation in theA≈100region

Lifetime measurements and nuclear deformation in theA≈100region

Shape study of theN=ZnucleusKr72viaβdecay

Low-energy Coulomb excitation of Sr96,98 beams

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