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16+ Spin-Gap Isomer in 96Cd

Singh, B. S. Nara; Liu, Z.; Wadsworth, R.; Grawe, H.; Brock, T. S.; Boutachkov, P.; Braun, N.; Blazhev, A.; Gorska, M. and Pietri, S., et al. (2011) In Physical Review Letters 107(17).
Abstract
A beta-decaying high-spin isomer in Cd-96, with a half-life T-1/2 = 0.29(-0.10)(+0.11) s, has been established in a stopped beam rare isotope spectroscopic investigations at GSI (RISING) experiment. The nuclei were produced using the fragmentation of a primary beam of Xe-124 on a Be-9 target. From the half-life and the observed gamma decays in the daughter nucleus, Ag-96, we conclude that the beta-decaying state is the long predicted 16(+) "spin-gap'' isomer. Shell-model calculations, using the Gross-Frenkel interaction and the pi nu(p(1/2,)g(9/2)) model space, show that the isoscalar component of the neutron-proton interaction is essential to explain the origin of the isomer. Core excitations across the N = Z = 50 gaps and the... (More)
A beta-decaying high-spin isomer in Cd-96, with a half-life T-1/2 = 0.29(-0.10)(+0.11) s, has been established in a stopped beam rare isotope spectroscopic investigations at GSI (RISING) experiment. The nuclei were produced using the fragmentation of a primary beam of Xe-124 on a Be-9 target. From the half-life and the observed gamma decays in the daughter nucleus, Ag-96, we conclude that the beta-decaying state is the long predicted 16(+) "spin-gap'' isomer. Shell-model calculations, using the Gross-Frenkel interaction and the pi nu(p(1/2,)g(9/2)) model space, show that the isoscalar component of the neutron-proton interaction is essential to explain the origin of the isomer. Core excitations across the N = Z = 50 gaps and the Gamow-Teller strength, Bd(GT) distributions have been studied via large-scale shell-model calculations using the pi nu(g, d, s) model space to compare with the experimental B(GT) value obtained from the half-life of the isomer. (Less)
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@article{dfa6faa8-657d-4068-9a01-0ac2bd7bf36c,
  abstract     = {A beta-decaying high-spin isomer in Cd-96, with a half-life T-1/2 = 0.29(-0.10)(+0.11) s, has been established in a stopped beam rare isotope spectroscopic investigations at GSI (RISING) experiment. The nuclei were produced using the fragmentation of a primary beam of Xe-124 on a Be-9 target. From the half-life and the observed gamma decays in the daughter nucleus, Ag-96, we conclude that the beta-decaying state is the long predicted 16(+) "spin-gap'' isomer. Shell-model calculations, using the Gross-Frenkel interaction and the pi nu(p(1/2,)g(9/2)) model space, show that the isoscalar component of the neutron-proton interaction is essential to explain the origin of the isomer. Core excitations across the N = Z = 50 gaps and the Gamow-Teller strength, Bd(GT) distributions have been studied via large-scale shell-model calculations using the pi nu(g, d, s) model space to compare with the experimental B(GT) value obtained from the half-life of the isomer.},
  articleno    = {172502},
  author       = {Singh, B. S. Nara and Liu, Z. and Wadsworth, R. and Grawe, H. and Brock, T. S. and Boutachkov, P. and Braun, N. and Blazhev, A. and Gorska, M. and Pietri, S. and Rudolph, Dirk and Domingo-Pardo, C. and Steer, S. J. and Atac, A. and Bettermann, L. and Caceres, L. and Eppinger, K. and Engert, T. and Faestermann, T. and Farinon, F. and Finke, F. and Geibel, K. and Gerl, J. and Gernhaeuser, R. and Goel, N. and Gottardo, A. and Grebosz, J. and Hinke, C. and Hoischen, Robert and Ilie, G. and Iwasaki, H. and Jolie, J. and Kaskas, A. and Kojouharov, I. and Kruecken, R. and Kurz, N. and Merchan, E. and Nociforo, C. and Nyberg, J. and Pfuetzner, M. and Prochazka, A. and Podolyak, Zs. and Regan, P. H. and Reiter, P. and Rinta-Antila, S. and Scholl, C. and Schaffner, H. and Soderstrom, P. -A. and Warr, N. and Weick, H. and Wollersheim, H. -J. and Woods, P. J. and Nowacki, F. and Sieja, K.},
  issn         = {1079-7114},
  language     = {eng},
  number       = {17},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {16+ Spin-Gap Isomer in 96Cd},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.107.172502},
  volume       = {107},
  year         = {2011},
}