<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>β</mml:mi></mml:math>
 decay of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">Cd</mml:mi><mml:mprescripts /><mml:none /><mml:mn>127</mml:mn></mml:mmultiscripts></mml:math>
 and excited states in 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">In</mml:mi><mml:mprescripts /><mml:none /><mml:mn>127</mml:mn></mml:mmultiscripts></m

Lorenz, Ch.; Sarmiento, Luis; Rudolph, Dirk; Golubev, P.; Eronen, T.; Nesterenko, D. A.; Kankainen, A.; Cañete, L.; Cox, D. M.; Fernández, A. lvarez; Forsberg, U.; Jungclaus, A.; Kojouharov, I.; Kurz, N.; Lalović, N.; Partanen, J.; Reponen, M.; Rinta‐Antila, S.; Roubin, A. de; Såmark-Roth, A.; Vaquero, V.; Vilén, M.

doi:10.1103/physrevc.99.044310

Cited by 11 publications

(11 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that without data for nuclides with Z < 50 and N ≈ 82, any predictions for the N = 82 shell gap are rather uncertain. While decayspectroscopy [16][17][18], laser-spectroscopy [19] and massspectrometry [20,21] studies have been performed for the neutron-rich cadmium isotopes, the energies of the low-lying isomers in 129 Cd and the N = 82 two-neutron shell gap remain unknown.The A ≈ 130 r-process abundance peak has long been considered an indication of a persistent N = 82 shell gap in various models. However, recent studies of r-process nucleosynthesis have underlined the importance of fission recycling in certain scenarios, in which the A = 130 abundance peak is primarily determined by the fissionfragment distribution of r-process actinides [22,23].In this work, we present the first direct determination of the N = 82 shell gap for Z < 50 with mass measurements of exotic cadmium isotopes and isomers between 124 Cd and 132 Cd.…”

mentioning

confidence: 99%

“…Figure 4 shows the difference in energy between the 3/2 + and 11/2 − states for the odd cadmium isotopes. Shell-model calculations assuming a closed 132 Sn (jj45pn [51,52] and NA-14 [16][17][18]53]) or allowing cross-shell excitations (EPQQM [54]) predict the 11/2 − state to become the ground state in 129 Cd. For EPQQM, obtaining the correct prediction required enhancing the monopole interaction between the πg 9/2 and νh 11/2 orbits [55].…”

mentioning

confidence: 99%

See 1 more Smart Citation

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

et al. 2020

View full text Add to dashboard Cite

We probe the N = 82 nuclear shell closure by mass measurements of neutron-rich cadmium isotopes with the ISOLTRAP spectrometer at ISOLDE-CERN. The new mass of 132 Cd offers the first value of the N = 82, two-neutron shell gap below Z = 50 and confirms the phenomenon of mutually enhanced magicity at 132 Sn. Using the recently implemented phase-imaging ion-cyclotronresonance method, the ordering of the low-lying isomers in 129 Cd and their energies are determined. The new experimental findings are used to test large-scale shell-model, mean-field and beyondmean-field calculations, as well as the ab initio valence-space in-medium similarity renormalization group.The so-called magic numbers of protons and neutrons are associated with large energy gaps in the effective single-particle spectrum of the nuclear mean field [1], revealing shell closures. As such, they are intimately connected to the nuclear interaction and represent essential benchmarks for nuclear models.Experiments with light radioactive beams have shown that shell closures at N = 8, 20 and 28 are substantially weakened when the number of protons in the nuclear system is reduced (see [2, 3] for a review). New, but weaker shell closures have also been found, e.g., N = 32 and 34 [4][5][6][7]. In the shell model, this evolution results from the interplay between the monopole part of the valencespace nucleon-nucleon interaction that determines the single-particle spectrum and multipole forces that induce correlations [8]. Starting from realistic nuclear forces, the study of closed-shell nuclei provides benchmarks for microscopic calculations of valence-space Hamiltonians, with their many-body contributions [9][10][11][12][13]. Despite extensive work, significantly less is known for heavier nuclei, in particular for the magic N = 82.The doubly magic nature of 132 Sn (with 50 protons and 82 neutrons) was reconfirmed recently [14,15]. But below Z = 50 the orbitals occupied by the Fermi-level protons change, as does the proton-neutron interaction, which drives shell evolution. This means that without data for nuclides with Z < 50 and N ≈ 82, any predictions for the N = 82 shell gap are rather uncertain. While decayspectroscopy [16][17][18], laser-spectroscopy [19] and massspectrometry [20,21] studies have been performed for the neutron-rich cadmium isotopes, the energies of the low-lying isomers in 129 Cd and the N = 82 two-neutron shell gap remain unknown.The A ≈ 130 r-process abundance peak has long been considered an indication of a persistent N = 82 shell gap in various models. However, recent studies of r-process nucleosynthesis have underlined the importance of fission recycling in certain scenarios, in which the A = 130 abundance peak is primarily determined by the fissionfragment distribution of r-process actinides [22,23].In this work, we present the first direct determination of the N = 82 shell gap for Z < 50 with mass measurements of exotic cadmium isotopes and isomers between 124 Cd and 132 Cd. We exploit all mass-measurement techniques of the ISOLTR...

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

et al. 2020

View full text Add to dashboard Cite

show abstract

“…A beta detector and an array of broad-energy range germanium detectors have been used to study the beta decays of 88 Se [64] and 117 Rh [65]. The TASISpec silicon detector array together with a cluster and clover detectors were employed to study beta decay of 127 Cd [66]. Total absorption gamma-ray spectroscopy has been performed on the beta decays of 87 Br, 88 Br, and 94 Rb [67], 100 Tc [68] and 100gs,100m Nb and 102gs,102m Nb [69].…”

Section: Other Activities At Jyfltrapmentioning

confidence: 99%

Recent experiments at the JYFLTRAP Penning trap

et al. 2020

View full text Add to dashboard Cite

The JYFLTRAP double Penning trap mass spectrometer at the Ion Guide Isotope Separator On-Line (IGISOL) facility offers excellent possibilities for high-precision mass measurements of radioactive ions. Around 400 atomic masses, including around 50 isomeric states, have been measured since JYFLTRAP became operational. JYFLTRAP has also been used as a high-resolution mass separator for decay spectroscopy experiments as well as an ion counter for fission yield studies. In this contribution, an overview of recent activities at the JYFLTRAP Penning trap is given, with a focus on nuclei discussed in the PLATAN2019 meeting.

show abstract

“…The corresponding ph configurations, however, may mix into the wave functions of the adopted model space and shift down excitation energies and GT strength. This interaction is shown to be able to reproduce well the low-lying levels in the odd-A 125-129 Cd and [125][126][127][128][129] In [34].…”

Section: B Gamow-teller Strength Distributionmentioning

confidence: 99%

Decay spectroscopy of Cd129

Saito¹,

Dillmann²,

Krücken³

et al. 2020

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

Excited states of 129 In populated following the β decay of 129 Cd were experimentally studied with the GRIFFIN spectrometer at the ISAC facility of TRIUMF, Canada. A 480-MeV proton beam was impinged on a uranium carbide target and 129 Cd was extracted using the Ion Guide Laser Ion Source (IG-LIS). β and γ rays following the decay of 129 Cd were detected with the GRIFFIN spectrometer comprising the plastic scintillator SCEPTAR and 16 high-purity germanium (HPGe) clover-type detectors. From the β-γ -γ coincidence analysis, 32 new transitions and seven new excited states were established, expanding the previously known level scheme of 129 In. The log f t values deduced from the β-feeding intensities suggest that some of the high-lying states were populated by the ν0g 7/2 → π 0g 9/2 allowed Gamow-Teller (GT) transition, which indicates that the allowed GT transition is more dominant in the 129 Cd decay than previously reported. Observation of fragmented Gamow-Teller strengths is consistent with theoretical calculations.

show abstract

β decay of Cd127 and excited states in In127

Cited by 11 publications

References 58 publications

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

First Glimpse of the N=82 Shell Closure below Z=50 from Masses of Neutron-Rich Cadmium Isotopes and Isomers

Recent experiments at the JYFLTRAP Penning trap

Decay spectroscopy of Cd129

Contact Info

Product

Resources

About