Magic Nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>132</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mi>n</mml:mi></mml:math>and Its One-Neutron-Hole Neighbor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:m

Bhattacharyya, P.; Daly, P. J.; Zhang, C. T.; Grabowski, Z. W.; Saha, S.; Broda, R.; Fornal, B.; Ahmad, I.; Seweryniak, D.; Wiedenhöver, I.; Carpenter, M. P.; Janssens, R. V. F.; Khoo, T. L.; Lauritsen, T.; Lister, C. J.; Reiter, P.; Blomqvist, J.

doi:10.1103/physrevlett.87.062502

Cited by 51 publications

(32 citation statements)

References 10 publications

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“…[4,54]). In all, the results affirm the evidence from mass measurements and neutron-separation energies [58][59][60][61], decay spectroscopy [62][63][64][65][66], Coulomb excitation [14,15,17,67,68], and transfer reactions [69,70], that 132 Sn is a good doubly magic nucleus. They furthermore indicate that the nucleon-nucleon interactions based on a G matrix derived from the CD Bonn potential with renormalization carried to third order [4] are appropriate for neutron-rich nuclei near 132 Sn.…”

Section: Nuclear Structure and Thesupporting

confidence: 80%

First-excited state g factor of Te136 by the recoil in vacuum method

et al. 2017

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The g factor of the first 2 + state of radioactive 136 Te with two valence protons and two valence neutrons beyond double-magic 132 Sn has been measured by the Recoil in Vacuum (RIV) method. The lifetime of this state is an order of magnitude longer than the lifetimes of excited states recently measured by the RIV method in Sn and Te isotopes, requiring a new evaluation of the free-ion hyperfine interactions and methodology used to determine the g factor. The calibration data are reported and the analysis procedures are described in detail. The resultant g factor has a similar magnitude to the g factors of other nuclei with an equal number of valence protons and neutrons in the major shell. However, an unexpected trend is found in the g factors of the N = 84 isotones, which decrease from 136 Te to 144 Nd. Shell model calculations with interactions derived from the CD Bonn potential show good agreement with the g factors and E2 transition rates of 2 + states around 132 Sn, confirming earlier indications that 132 Sn is a good doubly magic core.

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Section: Nuclear Structure and Thesupporting

confidence: 80%

First-excited state g factor of Te136 by the recoil in vacuum method

et al. 2017

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“…4) most likely contain core-excited configurations based on the excitation of either a neutron from an orbital below N = 82 to one above or a proton across Z = 50. Such core-excited states have been established in doubly-magic 132 3/2 ) neutron excitations coupled to a h 11/2 neutron hole respectively, a h 11/2 neutron hole and a g 7/2 proton were identified in overlapping energy ranges between 4 and 5 MeV [31,32]. In the present case of 130 In, the existence of negative-parity four-quasiparticle (4qp) states with configuration πg multiplets, respectively.…”

Section: Discussionmentioning

confidence: 58%

βdecay of semi-magicCd130: Revision and extension of the level scheme ofIn130

Jungclaus¹,

Grawe²,

Nishimura³

et al. 2016

Phys. Rev. C

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The β decay of the semi-magic nucleus 130 Cd has been studied at the RIBF facility at the RIKEN Nishina Center. The high statistics of the present experiment allowed for a revision of the established level scheme of 130 In and the observation of additional β feeding to high-lying core-excited states in 130 In. The experimental results are compared to shell-model calculations employing a model space consisting of the full major N = 50-82 neutron and Z = 28-50 proton shells and the NA-14 interaction, and good agreement is found.

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“…Known transitions from high-spin states in 131 Sn [16], including the 284 and 4273 keV transitions from the (19/2 + ) state at 4558 keV, were also observed following the single-neutron transfer reaction here. In these reactions at energies close to the Coulomb barrier, states will be weakly populated if more than about four units of angular momentum need to be transferred.…”

supporting

confidence: 53%

“…In both the knockout and the transfer cases, the measurement of γ rays in coincidence with charged particles proved necessary to measure the energies of states, or to separate states that could not otherwise be resolved. Additionally, the observation of previously known γ-ray transitions from high-spin states in 131 Sn [16] led to the recognition of the first transfer reaction on an isomeric, rare ion beam.…”

Section: Discussionmentioning

confidence: 99%

Recent Direct Reaction Experimental Studies with Radioactive Tin Beams

Jones¹,

Ahn²,

Allmond³

et al. 2015

Acta Phys. Pol. B

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Direct reaction techniques are powerful tools to study the single-particle nature of nuclei. Performing direct reactions on short-lived nuclei requires radioactive ion beams produced either via fragmentation or the Isotope Separation OnLine (ISOL) method. Some of the most interesting regions to study with direct reactions are close to the magic numbers where changes in shell structure can be tracked. These changes can impact the final abundances of explosive nucleosynthesis. The structure of the chain of tin isotopes is strongly influenced by the Z = 50 proton shell closure, as well as the neutron shell closures lying in the neutron-rich, N = 82, and neutron-deficient, N = 50, regions. Here, we present two examples of direct reactions on exotic tin isotopes. The first uses a one-neutron transfer reaction and a low-energy reaccelerated ISOL beam to study states in 131Sn from across the N = 82 shell closure. The second example utilizes a one-neutron knockout reaction on fragmentation beams of neutron-deficient 106,108Sn. In both cases, measurements of γ rays in coincidence with charged particles proved to be invaluable

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Magic NucleusS132nand Its One-Neutron-Hole NeighborS

Cited by 51 publications

References 10 publications

First-excited state g factor of Te136 by the recoil in vacuum method

First-excited state g factor of Te136 by the recoil in vacuum method

βdecay of semi-magicCd130: Revision and extension of the level scheme ofIn130

Recent Direct Reaction Experimental Studies with Radioactive Tin Beams

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