The low energy ?-strength of135Sb

Hoff, P.; Ekstrom, Brenda L.; Fogelberg, B.

doi:10.1007/bf01292426

Cited by 10 publications

(13 citation statements)

References 10 publications

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“…Note that the 854 keV level is populated also in the 133 In decay. The assignment of this level as 3p 3͞2 has a firm basis in the systematics [6]. The observed population is therefore a strong indication that the 1͞2 2 isomer of 133 In indeed was present in our samples.…”

supporting

confidence: 59%

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Single-Neutron States inS133n

et al. 1996

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The location of several single-neutron states in 133 Sn has been identified. The p 3͞2 , h 9͞2 , and f 5͞2 states were found at 853.7, 1560.9, and 2004.6 keV, respectively, by measuring g rays in coincidence with delayed neutrons following the decay of 134 In. Crucial for obtaining the new data were the improved yields at the mass-separator facility ISOLDE-PSB at CERN. A semiempirically adjusted Woods-Saxon calculation, based on parameters from the Pb region and normalized on the mass data at 132 Sn, reproduces the new single particle energies with good precision. [S0031-9007(96)00824-1]

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supporting

confidence: 59%

“…b The absolute intensity of this transition is (5-10)% per decay of 134 In, and about 0.5% per decay of 133 In. nuclides [6], and also by shell model calculations specific for the neutron-rich Sn region. The work by Chou and Warburton [7] predicts the order of the SP states partly by using experimental data from the heavier isotones.…”

mentioning

confidence: 99%

Single-Neutron States inS133n

et al. 1996

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“…Despite the lack of this important piece of information, we suggest a 7/2 + ground-state spin also in 137 Sb, in analogy to 133 Sb and 135 Sb. This assignment is supported by the relative intensities of the 6 + → 4 + , 4 + → 2 + , and 2 + → 0 + transitions in 136 Te, emitted following β-delayed neutron emission and which are very similar to those observed in 134 Te following the decay of the (7/2 + ) ground state of 135 Sb [30,31]. The multipolarity of the 84 keV transition is proposed to be M1 (α M1 = 1.03).…”

Section: B the 137 Sn → 137 Sb Decaymentioning

confidence: 71%

Evolution of proton single-particle states in neutron-rich Sb isotopes beyond N=82

Jungclaus¹,

Keatings²,

Simpson³

et al. 2020

Phys. Rev. C

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The β decay of the semimagic Sn isotopes 136,137,138 Sn has been studied at the Radioactive Isotope Beam Factory at the RIKEN Nishina Center. The first experimental information on excited states was obtained for 137 Sb while, in the case of 136 Sb, the established excitation scheme could be extended by ten previously unidentified levels. In the decay of the most-neutron-rich isotope 138 Sn, two γ rays were observed for the first time. The new experimental results, in combination with state-of-the-art shell-model calculations, provide the first information with respect to the evolution of the 0g 7/2 and 1d 5/2 proton single-particle states with increasing neutron number beyond N = 84.

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“…Consequently, there is a paucity of knowledge on the lower spin states, with a particular lack of convincing observation of the location of the 1/2 − state corresponding to the p 1/2 strength, despite a highly tentative placement via a β decay measurement. Many more states in 135 Te, which lies two protons above the Z=50 shell closure of the Sn isotopes, have been observed in previous experiments [9], but the tentative J π assignments in the literature are from systematics and shell-model predictions, which are unconfirmed experimentally. The location of the single-particle strength, particularly the location of states with large p strength, is of particular interest as it can have a significant impact on direct and semi-direct neutron-capture cross sections at astrophysical energies, which are predicted to exceed compound capture cross sections in the region of the N=82 shell closure [4].…”

Section: Pos(nic X)142mentioning

confidence: 89%

Neutron Transfer Measurements on Neutron-rich N=82 Nuclei

Pain¹

2009

Proceedings of 10th Symposium on Nuclei in the Cosmos — PoS(NIC X)

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Calculations of r-process nucleosynthesis rely significantly on nuclear structure models as input, which are not well tested in the neutron-rich regime, due to the paucity of experimental data on the majority of these nuclei. High quality radioactive beams have recently made possible the measurement of (d,p) reactions on unstable nuclei in inverse kinematics, which can yield information on the development of single-neutron structure away from stability in close proximity to suggested r-process paths. The Oak Ridge Rutgers University Barrel Array (ORRUBA) has been developed for the measurement of such reactions. An early partial implementation of ORRUBA has been utilized to measure the 132 Sn(d,p) 133 Sn and 134 Te(d,p) 135 Te reactions for the first time.

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The low energy ?-strength of135Sb

Cited by 10 publications

References 10 publications

Single-Neutron States inS133n

Single-Neutron States inS133n

Evolution of proton single-particle states in neutron-rich Sb isotopes beyond N=82

Neutron Transfer Measurements on Neutron-rich N=82 Nuclei

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