Evolution of shell structure in exotic nuclei

Otsuka, Takaharu; Gade, A.; Sorlin, O.; Suzuki, Toshio; Utsuno, Yutaka

doi:10.1103/revmodphys.92.015002

Cited by 353 publications

(359 citation statements)

References 351 publications

(355 reference statements)

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“…1; Garcia-Ramos and Heyde 2019), and we also include it in the same column. Even though the magic numbers may change in neutron-rich nuclei when the number of neutrons is much larger than the number of protons (Steppenbeck 2013;Otsuka 2020), in this paper we consider only those nuclei which are close to the beta-stability line and do not consider such effect. Though the heaviest element discovered so far is Oganessson (Z=118), the proton magic number after Z=82 is currently unknown.…”

Section: Nuclear Periodic Tablementioning

confidence: 99%

A nuclear periodic table

Hagino

Maeno

2020

Found Chem

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There have been many empirical evidences which show that the single-particle picture holds to a good approximation in atomic nuclei. In this picture, protons and neutrons move independently inside a mean-field potential generated by an interaction among the nucleons. This leads to the concept of nuclear shells, similar to the electronic shells in atoms. In particular, the magic numbers due to closures of the nucleonic shells, corresponding to noble gases in elements, have been known to play an important role in nuclear physics. Here we propose a periodic table for atomic nuclei, in which the elements are arranged according to the known nucleonic shells. The nuclear periodic table clearly indicates that nuclei in the vicinity of the magic numbers can be understood in terms of a shell closure with one or two additional nucleons or nucleon holes, while nuclei far from the magic numbers are characterized by nuclear deformation.

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Section: Nuclear Periodic Tablementioning

confidence: 99%

A nuclear periodic table

Hagino

Maeno

2020

Found Chem

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“…(a) Neutron effective single-particle energies (ESPEs) for N=8 isotones obtained by using monopoles of SFO [9] and PSDMK2 [12]. (b) Energy levels of 12 Be obtained by shell-model calculations with SFO (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) and PSDMK2 as well as experimental values [14].…”

Section: Melting Of N=8 Magicity and New Shell-model Hamiltoniansmentioning

confidence: 99%

“…We show in Fig. 1(b) the case for SFO (6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), where the p-shell part is taken to be TBE(6-16) interaction instead of POT(8-16) interaction [5]. Calculated B(E2) value is 8.1 fm 4 for the effective charges e p =1.2 and e n =0.3, while the experimental value is 6.4-7.6 fm 4 [14].…”

Section: Melting Of N=8 Magicity and New Shell-model Hamiltoniansmentioning

confidence: 99%

Roles of Nuclear Forces on the Shell Evolutions Toward Driplines

Suzuki

2018

Proceedings of the Ito International Research Center Symposium "Perspectives of the Physics of Nuclear Structure"

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Roles of tensor, two-body spin-orbit and three-nucleon forces on nuclear shell evolutions and change of magic numbers in exotic nuclei are discussed. Breaking of N=8 magicity toward the dripline observed in various experimental data as well as appearence of a new magic number N=6 are well explained with new shell-model Hamiltonians in p-sd shell, which have proper tensor components. Important roles of both the tensor and spin-orbit interactions on the inversion of 1d 5/2 and 2s 1/2 orbits in N=9 isotone chain are clarified. Shell evolutions in carbon and oxygen isotopes are studied with inclusion of repulsive contributions among valence neutrons, which come from three-nucleon forces. The position of the dripline in the isotopes is reproduced with the three-body forces. Halo structure of the dripline nucleus, 22 C, is studied within a three-body model using the low energy neutron-neutron interaction. Correlations between 20 C core and s-wave halo neutrons are important to give rather small radius for the halo neutron. A new Hamiltonian in p f-shell with proper tensor components is used to evaluate electron-capture rates at stellar environments, and applied to nucleosynthesis of iron-group elements in type Ia supernova explosions.

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“…In the light-and medium-mass regions, structural changes have been evidenced for nuclei with a large excess of neutrons, leading to the breakdown of the traditional magic numbers and the appearance of new ones. These findings have driven a great theoretical effort to understand the microscopic mechanism underlying the shell evolution, with special attention to the role of the different components of the nuclear force (see, for instance, [5]). It is of great interest to verify if peculiar properties, as those observed in lighter nuclei, may be also observed in the 132 Sn region.…”

Section: Introductionmentioning

confidence: 99%

Realistic shell model and nuclei around ¹³²Sn

Gargano

Gregorio

2020

EPJ Web Conf.

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This contribution reports on a shell-model study of nuclei in the 132Sn region employing a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential renormalized through the use of the Vlow−k approach. We shall focus on some selected results for nuclei with a few valence particles and/or holes with respect to 132Sn, namely Sn isotopes with N > 82 and 130Te, which have, in part, been discussed in previous papers. Results are compared with experiments, and predictions that may provide guidance to future experiments are also discussed. It is the aim of this contribution to underline the importance of studying 132Sn neighbours to acquire a deep understanding of nuclear structure, that may be very useful also in other physics fields, and to show that the realistic shell model is a very effective tool to conduct these studies.

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Evolution of shell structure in exotic nuclei

Cited by 353 publications

References 351 publications

A nuclear periodic table

A nuclear periodic table

Roles of Nuclear Forces on the Shell Evolutions Toward Driplines

Realistic shell model and nuclei around ¹³²Sn

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Evolution of shell structure in exotic nuclei

Cited by 353 publications

References 351 publications

A nuclear periodic table

A nuclear periodic table

Roles of Nuclear Forces on the Shell Evolutions Toward Driplines

Realistic shell model and nuclei around 132Sn

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Product

Resources

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Realistic shell model and nuclei around ¹³²Sn