Prolate-Spherical Shape Coexistence at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>28</mml:mn></mml:math>in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="bold">S</mml:mi><mml:mprescripts /><mml:none /><mml:mn>44</mml:mn></mml:mmultiscripts></mml:math>

Force, C.; Grévy, S.; Gaudefroy, L.; Sorlin, O.; Cáceres, L.; Rotaru, F.; Mrázek, J.; Achouri, N. L.; Angélique, J. C.; Azaiez, F.; Bastin, B.; Borcea, R.; Buţă, A.; Daugas, J. M.; Dlouhý, Z.; Dombrádi, Zs.; Oliveira, F. de; Negoiţă, F.; Penionzhkevich, Y. E.; Saint‐Laurent, M. G.; Sohler, D.; Stănoiu, M.; Stefan, I.; Stödel, C.; Nowacki, F.

doi:10.1103/physrevlett.105.102501

Cited by 97 publications

(95 citation statements)

References 31 publications

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“…The structure of the neutron-rich sulfur isotopes displays a variety of phenomena that are closely tied to shell evolution in exotic nuclei [3], with shape [4][5][6] and configuration coexistence [7][8][9] driving the properties of 44 S (N = 28) at low excitation energy. It is interesting to explore the evolution of the low-lying states as N = 28 is approached.…”

Section: Introductionmentioning

confidence: 99%

In-beam γ -ray spectroscopy of S38–42

et al. 2016

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The low-energy excitation level schemes of the neutron-rich 38−42 S isotopes are investigated via in-beam γ-ray spectroscopy following the fragmentation of 48 Ca and 46 Ar projectiles on a 12 C target at intermediate beam energies. Information on γγ coincidences complemented by comparisons to shell-model calculations were used to construct level schemes for these neutron-rich nuclei. The experimental data are discussed in the context of large-scale shell-model calculations with the SDPF-MU effective interaction in the sd-pf shell. For the even-mass S isotopes, the evolution of the yrast sequence is explored as well as a peculiar change in decay pattern of the second 2 + states at N = 26. For the odd-mass 41 S, a level scheme is presented that seems complete below 2.2 MeV and consistent with the predictions by the SDPF-MU shell-model Hamiltonian; this is a remarkable benchmark given the rapid shell and shape evolution at play in the S isotopes as the broken-down N = 28 magic number is approached. Furthermore, the population of excited final states in projectile fragmentation is discussed.

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Section: Introductionmentioning

confidence: 99%

In-beam γ -ray spectroscopy of S38–42

et al. 2016

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“…The neutron-rich exotic isotones near 42 Si have attracted considerable attention because of the novel role that neutron shell structure -and the narrowing or collapse of the N = 28 major shell closure -plays in causing deformation in these nuclei [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. However, proton shell structure must also be involved [18][19][20].…”

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confidence: 99%

γ-ray spectroscopy of one-proton knockout from45Cl

et al. 2012

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“…State-of-the-art nuclear shell model calculations have been performed for comparison to experimental energies, for deducing spin assignments and decay branches of the states, and for estimating their direct feeding from the one proton knock-out reaction. The energies and tentative spin assignments of the three excited states (2 [12,13] are confirmed. The 2 + 2 level at 2156(49) keV is found to have a specific configuration, and is likely spherical.…”

Section: Discussionmentioning

confidence: 65%

“…Between 2000 and 2800 keV five levels were calculated. Among them, only the 2 + 2 state at 2140 keV excitation energy has a spherical configuration with intrinsic quadrupole moment -0.3 efm 2 [12]. It is predicted to decay by 83% and 16% to the 0 2 ) level of spherical character based on the fact that if this state had had a more mixed configuration, higher lying states would have decayed through it and been detected in this experiment.…”

Section: Discussionmentioning

confidence: 67%

“…These two conditions are fulfilled also in 42 Si, which was found to be deformed [7,8]. One of the key nuclei to understand how deformation sets in for the N = 28 isotones between the spherical 48 Ca and 42 Si is 44 S. This nucleus has been investigated using different experimental approaches, such as β-decay [5,6], Coulomb excitation [9], in-beam γ -ray spectroscopy [10], isomer studies [11,12], electron spectroscopy [12] and the two proton knock-out reaction [13]. The works of Refs.…”

Section: Introductionmentioning

confidence: 99%

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In-beam spectroscopic studies of the44S nucleus

Cáceres¹,

Sohler²,

Grévy³

et al. 2012

Phys. Rev. C

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The structure of the 44 S nucleus has been studied at GANIL through the one proton knock-out reaction from a 45 Cl secondary beam at 42 A·MeV. The γ rays following the de-excitation of 44 S were detected in flight using the 70 BaF 2 detectors of the Château de Cristal array. An exhaustive γ γ -coincidence analysis allowed an unambiguous construction of the level scheme up to an excitation energy of 3301 keV. The existence of the spherical 2 + 2 state is confirmed and three new γ -ray transitions connecting the prolate deformed 2 + 1 level were observed. Comparison of the experimental results to shell model calculations further supports a prolate and spherical shape coexistence with a large mixing of states built on the ground state band in 44 S.

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Prolate-Spherical Shape Coexistence atN=28inS44

Cited by 97 publications

References 31 publications

In-beam γ -ray spectroscopy of S38–42

In-beam γ -ray spectroscopy of S38–42

γ-ray spectroscopy of one-proton knockout from45Cl

In-beam spectroscopic studies of the44S nucleus

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