Structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Sn</mml:mi><mml:mprescripts /><mml:none /><mml:mn>107</mml:mn></mml:mmultiscripts></mml:math>studied through single-neutron knockout reactions

Cerizza, G.; Ayres, A.; Jones, K. L.; Grzywacz, R.; Bey, A.; Bingham, C. R.; Cartegni, L.; Miller, D.; Padgett, S.; Baugher, T.; Bazin, D.; Berryman, J. S.; Gade, A.; McDaniel, S.; Ratkiewicz, A.; Shore, A.; Stroberg, S. R.; Weißhaar, D.; Wimmer, K.; Winkler, R.; Pain, S. D.; Chae, K. Y.; Cizewski, J. A.; Howard, M. E.; Tostevin, J. A.

doi:10.1103/physrevc.93.021601

Cited by 11 publications

(9 citation statements)

References 25 publications

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“…1 we report the measured single neutron-removal cross sections (solid points in the upper panel) and single proton-removal cross sections (solid points in the lower panel) for tin isotopes. In this figure we also report similar measurements previously reported in literature [13][14][15]. As can be seen, there is a very good agreement in the measurements done for the same nuclei in different works.…”

Section: Resultssupporting

confidence: 89%

“…Fig.1. Single neutron-(upper panel) and proton-removal cross sections (lower panel) for tin isotopes measured in this work (solid points), together with other measurements reported in literature[13][14][15]. The dashed lines represent standard calculations while the solid line corresponds to calculations where the effect of shortrange correlated neutron-proton pairs is considered phenomenologically.…”

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confidence: 79%

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Systematic Investigation of Nucleon Knockout around ¹³²Sn

Benlliure

Díaz-Cortés

Rodríguez-Sánchez

et al. 2020

Proceedings of 13th International Conference on Nucleus-Nucleus Collisions

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Neutron-and proton-removal cross sections for nuclei around 132 Sn have been systematically measured. The measurements clearly show the effect of the N=82 closed shells. Model calculations describing all processes leading to single nucleon removal residual nuclei provide a reasonable description of the neutron removal process but clearly overestimate the proton removal ones. This overestimation of the proton removal channels could be explained as due to the presence of short-range correlated neutron-proton pairs in nuclei.

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Section: Resultssupporting

confidence: 89%

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confidence: 79%

Systematic Investigation of Nucleon Knockout around ¹³²Sn

Benlliure

Díaz-Cortés

Rodríguez-Sánchez

et al. 2020

Proceedings of 13th International Conference on Nucleus-Nucleus Collisions

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“…We recall that the lowest two states in the odd isotopes 105−113 Te and 101−105 Sn are only about 0.2 MeV apart and lack definite spin assignments. In tin, this near degeneracy between the J π = 5/2 + and 7/2 + states persists up to 111 Sn, and the ground-state spin changes from J π = 5/2 + in 107 Sn [77] and 109 Sn to J π = 7/2 + in 111 Sn. The level ordering in 101 Sn to 105 Sn between the J π = 5/2 + and 7/2 + states is not known.…”

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confidence: 97%

Structure of the Lightest Tin Isotopes

et al. 2018

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We link the structure of nuclei around ^{100}Sn, the heaviest doubly magic nucleus with equal neutron and proton numbers (N=Z=50), to nucleon-nucleon (NN) and three-nucleon (NNN) forces constrained by data of few-nucleon systems. Our results indicate that ^{100}Sn is doubly magic, and we predict its quadrupole collectivity. We present precise computations of ^{101}Sn based on three-particle-two-hole excitations of ^{100}Sn, and we find that one interaction accurately reproduces the small splitting between the lowest J^{π}=7/2^{+} and 5/2^{+} states.

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“…) values of neutron deficient semi-magic Sn isotopes have triggered extensive experimental [2][3][4][5][6][7][8][9][10][11][12] and theoretical [13][14][15][16][17][18][19][20][21] activities, in particular regarding the fundamental roles played by core excitations and the nuclear pairing correlation (or seniority coupling). The study of transition rates in isotopic chains just above Z = 50 may provide further information on the role of core excitations [22,23].…”

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confidence: 99%

Shell-model configuration-interaction description of quadrupole collectivity in Te isotopes

2016

Phys. Rev. C

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We present systematic calculations on the spectroscopy and transition properties of even-even Te isotopes by using the large-scale configuration interaction shell model approach with a realistic interaction. These nuclei are of particular interest since their yrast spectra show a vibrational-like equally-spaced pattern but the few known E2 transitions show anomalous rotational-like behavior, which cannot be reproduced by collective models. Our calculations reproduce well the equallyspaced spectra of those isotopes as well as the constant behavior of the B(E2) values in 114 Te. The calculated B(E2) values for neutron-deficient and heavier Te isotopes show contrasting different behaviors along the yrast line. The B(E2) of light isotopes can exhibit a nearly constant bevavior upto high spins. We show that this is related to the enhanced neutron-proton correlation when approaching N = 50. [13][14][15][16][17][18][19][20][21] activities, in particular regarding the fundamental roles played by core excitations and the nuclear pairing correlation (or seniority coupling). The study of transition rates in isotopic chains just above Z = 50 may provide further information on the role of core excitations [22,23]. The limited number of valence protons and neutrons are not expected to induce any significant quadrupole correlation in this region [24][25][26][27]. The low-lying collective excitations of those nuclei were discussed in terms of quadrupole vibrations [24,28] in relation to the fact that the even-even Te isotopes between N = 56 and 70 show regular equallyspaced yrast spectra (c.f., Fig. 1 in Ref. [24]). If that is the case, the Te isotopes will provide an ideal ground to explore the nature of the elusive nuclear vibration and the residual interactions that leading to that collectivity. However, the available E2 transition strengths along the yrast line in 114,120−124 Te show an anomalous rotationallike behavior, which can not be reproduced by collective models or the interacting boson model [29,30]. Another intriguing phenomenon is the nearly constant behavior of the energies of the 2 + and 4 + states in Te and Xe isotopes and their ratios when approaching N = 50, in contrast to the decreasing behavior when approaching N = 82 [24]. This was analyzed in Ref.[31] based on the quasiparticle random phase approximation approach where an competition between the quadurople-quadrupole correlation and neutron-proton pairing correlation was suggested.An enhanced interplay between neutrons and protons * chongq@kth.se is expected in the 100 Sn region since the protons and neutrons partially occupy the same quantum orbitals near the Fermi level [24,[31][32][33]. In relation to that, there has also been a long effort searching for superallowed alpha decays from those N ∼ Z isotopes [34,35]. The region is also expected to be the endpoint of the astrophysical rapid proton capture (rp) process [36,37]. The octupole correlation may also play a role here (the coupling between the 0h 11/2 and 1d 5/2 orbitals) [26,38,39]. Still, compa...

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Structure ofSn107studied through single-neutron knockout reactions

Cited by 11 publications

References 25 publications

Systematic Investigation of Nucleon Knockout around ¹³²Sn

Systematic Investigation of Nucleon Knockout around ¹³²Sn

Structure of the Lightest Tin Isotopes

Shell-model configuration-interaction description of quadrupole collectivity in Te isotopes

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Structure ofSn107studied through single-neutron knockout reactions

Cited by 11 publications

References 25 publications

Systematic Investigation of Nucleon Knockout around 132Sn

Systematic Investigation of Nucleon Knockout around 132Sn

Structure of the Lightest Tin Isotopes

Shell-model configuration-interaction description of quadrupole collectivity in Te isotopes

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Systematic Investigation of Nucleon Knockout around ¹³²Sn

Systematic Investigation of Nucleon Knockout around ¹³²Sn