The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd

P. J. Davies, H. Grawe, K. Moschner, A. Blazhev, R. Wadsworth, P. Boutachkov, F. Ameil, A. Yagi, H. Baba, T. Bäck, M. Dewald, P. Doornenbal, T. Faestermann, A. Gengelbach, J. Gerl, R. Gernhäeuser, S. Go, M. Górska, E. Gregor, T. IsobeD. G. Jenkins, H. Hotaka, J. Jolie, I. Kojouharov, N. Kurz, M. Lewitowicz, G. Lorusso, L. Maier, E. Merchan, F. Naqvi, H. Nishibata, D. Nishimura, S. Nishimura, F. Nowacki, N. Pietralla, H. Schaffner, P. A. Söderström, H. S. Jung, K. Steiger, T. Sumikama, J. Taprogge, P. Thöle, N. Warr, H. Watanabe, V. Werner, Z. Y. Xu, K. Yoshinaga, Y. Zhu

Research output: Contribution to journalArticle

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Abstract

The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.

Original languageEnglish
Pages (from-to)474-479
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume767
DOIs
Publication statusPublished - Apr 10 2017

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isomers
protons
decay
excitation
life (durability)
ground state
industrial plants
isotopes
stations
spectrometers
estimates
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd. / Davies, P. J.; Grawe, H.; Moschner, K.; Blazhev, A.; Wadsworth, R.; Boutachkov, P.; Ameil, F.; Yagi, A.; Baba, H.; Bäck, T.; Dewald, M.; Doornenbal, P.; Faestermann, T.; Gengelbach, A.; Gerl, J.; Gernhäeuser, R.; Go, S.; Górska, M.; Gregor, E.; Isobe, T.; Jenkins, D. G.; Hotaka, H.; Jolie, J.; Kojouharov, I.; Kurz, N.; Lewitowicz, M.; Lorusso, G.; Maier, L.; Merchan, E.; Naqvi, F.; Nishibata, H.; Nishimura, D.; Nishimura, S.; Nowacki, F.; Pietralla, N.; Schaffner, H.; Söderström, P. A.; Jung, H. S.; Steiger, K.; Sumikama, T.; Taprogge, J.; Thöle, P.; Warr, N.; Watanabe, H.; Werner, V.; Xu, Z. Y.; Yoshinaga, K.; Zhu, Y.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 767, 10.04.2017, p. 474-479.

Research output: Contribution to journalArticle

Davies, PJ, Grawe, H, Moschner, K, Blazhev, A, Wadsworth, R, Boutachkov, P, Ameil, F, Yagi, A, Baba, H, Bäck, T, Dewald, M, Doornenbal, P, Faestermann, T, Gengelbach, A, Gerl, J, Gernhäeuser, R, Go, S, Górska, M, Gregor, E, Isobe, T, Jenkins, DG, Hotaka, H, Jolie, J, Kojouharov, I, Kurz, N, Lewitowicz, M, Lorusso, G, Maier, L, Merchan, E, Naqvi, F, Nishibata, H, Nishimura, D, Nishimura, S, Nowacki, F, Pietralla, N, Schaffner, H, Söderström, PA, Jung, HS, Steiger, K, Sumikama, T, Taprogge, J, Thöle, P, Warr, N, Watanabe, H, Werner, V, Xu, ZY, Yoshinaga, K & Zhu, Y 2017, 'The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 767, pp. 474-479. https://doi.org/10.1016/j.physletb.2017.02.013
Davies, P. J. ; Grawe, H. ; Moschner, K. ; Blazhev, A. ; Wadsworth, R. ; Boutachkov, P. ; Ameil, F. ; Yagi, A. ; Baba, H. ; Bäck, T. ; Dewald, M. ; Doornenbal, P. ; Faestermann, T. ; Gengelbach, A. ; Gerl, J. ; Gernhäeuser, R. ; Go, S. ; Górska, M. ; Gregor, E. ; Isobe, T. ; Jenkins, D. G. ; Hotaka, H. ; Jolie, J. ; Kojouharov, I. ; Kurz, N. ; Lewitowicz, M. ; Lorusso, G. ; Maier, L. ; Merchan, E. ; Naqvi, F. ; Nishibata, H. ; Nishimura, D. ; Nishimura, S. ; Nowacki, F. ; Pietralla, N. ; Schaffner, H. ; Söderström, P. A. ; Jung, H. S. ; Steiger, K. ; Sumikama, T. ; Taprogge, J. ; Thöle, P. ; Warr, N. ; Watanabe, H. ; Werner, V. ; Xu, Z. Y. ; Yoshinaga, K. ; Zhu, Y. / The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2017 ; Vol. 767. pp. 474-479.
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title = "The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd",
abstract = "The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.",
author = "Davies, {P. J.} and H. Grawe and K. Moschner and A. Blazhev and R. Wadsworth and P. Boutachkov and F. Ameil and A. Yagi and H. Baba and T. B{\"a}ck and M. Dewald and P. Doornenbal and T. Faestermann and A. Gengelbach and J. Gerl and R. Gernh{\"a}euser and S. Go and M. G{\'o}rska and E. Gregor and T. Isobe and Jenkins, {D. G.} and H. Hotaka and J. Jolie and I. Kojouharov and N. Kurz and M. Lewitowicz and G. Lorusso and L. Maier and E. Merchan and F. Naqvi and H. Nishibata and D. Nishimura and S. Nishimura and F. Nowacki and N. Pietralla and H. Schaffner and S{\"o}derstr{\"o}m, {P. A.} and Jung, {H. S.} and K. Steiger and T. Sumikama and J. Taprogge and P. Th{\"o}le and N. Warr and H. Watanabe and V. Werner and Xu, {Z. Y.} and K. Yoshinaga and Y. Zhu",
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T1 - The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd

AU - Davies, P. J.

AU - Grawe, H.

AU - Moschner, K.

AU - Blazhev, A.

AU - Wadsworth, R.

AU - Boutachkov, P.

AU - Ameil, F.

AU - Yagi, A.

AU - Baba, H.

AU - Bäck, T.

AU - Dewald, M.

AU - Doornenbal, P.

AU - Faestermann, T.

AU - Gengelbach, A.

AU - Gerl, J.

AU - Gernhäeuser, R.

AU - Go, S.

AU - Górska, M.

AU - Gregor, E.

AU - Isobe, T.

AU - Jenkins, D. G.

AU - Hotaka, H.

AU - Jolie, J.

AU - Kojouharov, I.

AU - Kurz, N.

AU - Lewitowicz, M.

AU - Lorusso, G.

AU - Maier, L.

AU - Merchan, E.

AU - Naqvi, F.

AU - Nishibata, H.

AU - Nishimura, D.

AU - Nishimura, S.

AU - Nowacki, F.

AU - Pietralla, N.

AU - Schaffner, H.

AU - Söderström, P. A.

AU - Jung, H. S.

AU - Steiger, K.

AU - Sumikama, T.

AU - Taprogge, J.

AU - Thöle, P.

AU - Warr, N.

AU - Watanabe, H.

AU - Werner, V.

AU - Xu, Z. Y.

AU - Yoshinaga, K.

AU - Zhu, Y.

PY - 2017/4/10

Y1 - 2017/4/10

N2 - The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.

AB - The first evidence for β-delayed proton emission from the 16+ spin gap isomer in 96Cd is presented. The data were obtained from the Rare Isotope Beam Factory, at the RIKEN Nishina Center, using the BigRIPS spectrometer and the EURICA decay station. βp branching ratios for the ground state and 16+ isomer have been extracted along with more precise lifetimes for these states and the lifetime for the ground state decay of 95Cd. Large scale shell model (LSSM) calculations have been performed and WKB estimates made for ℓ=0,2,4 proton emission from three resonance-like states in 96Ag, that are populated by the β decay of the isomer, and the results compared to the new data. The calculations suggest that ℓ=2 proton emission from the resonance states, which reside ∼5 MeV above the proton separation energy, dominates the proton decay. The results highlight the importance of core-excited wavefunction components for the 16+ state.

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U2 - 10.1016/j.physletb.2017.02.013

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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