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Journal Articles Nature Year : 2012

Superallowed Gamow-Teller decay of the doubly magic nucleus $^{100}$Sn

C.B. Hinke
  • Function : Author
M. Böhmer
  • Function : Author
P. Boutachkov
  • Function : Author
T. Faestermann
  • Function : Author
H. Geissel
  • Function : Author
J. Gerl
  • Function : Author
R. Gernhauser
  • Function : Author
M. Gorska
  • Function : Author
A. Gottardo
  • Function : Author
H. Grawe
  • Function : Author
J. L. Grebosz
  • Function : Author
R. Krûcken
  • Function : Author
N. Kurz
  • Function : Author
Z. Liu
  • Function : Author
L. Maier
  • Function : Author
S. Piétri
  • Function : Author
Zs. Podolyak
  • Function : Author
K. Sieja
K. Steiger
  • Function : Author
K. Straub
  • Function : Author
H. Weick
  • Function : Author
P. J.Woods
  • Function : Author
N. Al-Dahan
  • Function : Author
N. Alkhomashi
  • Function : Author
A. Ataç
  • Function : Author
A. Blazhev
  • Function : Author
N. F. Braun
  • Function : Author
I.T. Celikovic
  • Function : Author
T. Davinson
  • Function : Author
I. Dillmann
  • Function : Author
C. Domingo-Pardo
  • Function : Author
P. C. Doornenbal
  • Function : Author
G. F. Farrelly
  • Function : Author
F. Farinon
  • Function : Author
N. Goel
  • Function : Author
T.C. Habermann
  • Function : Author
R. Hoischen
  • Function : Author
R. Janik
  • Function : Author
M. Karny
  • Function : Author
A. Kaskas
  • Function : Author
I.M. Kojouharov
  • Function : Author
Th. Kroll
  • Function : Author
Y. Litvinov
  • Function : Author
S. Myalski
  • Function : Author
F. Nebel
  • Function : Author
S. Nishimura
  • Function : Author
C. Nociforo
  • Function : Author
J. Nyberg
  • Function : Author
A. R. Parikh
  • Function : Author
A. Prochazka
  • Function : Author
P. H. Regan
  • Function : Author
C. Rigollet
  • Function : Author
H. Schaffner
  • Function : Author
C. Scheidenberger
  • Function : Author
S. Schwertel
  • Function : Author
P.-A. Soderstrom
  • Function : Author
S.J. Steer
  • Function : Author
A. Stolz
  • Function : Author
P. Strmen
  • Function : Author

Abstract

The shell structure of atomic nuclei is associated with 'magic numbers' and originates in the nearly independent motion of neutrons and protons in a mean potential generated by all nucleons. During b1-decay, a proton transforms into a neutron in a previously not fully occupied orbital, emitting a positron-neutrino pair with either parallel or antiparallel spins, in a Gamow-Teller or Fermi transition, respectively. The transition probability, or strength, of a Gamow-Teller transition depends sensitively on the underlying shell structure and is usually distributed among many states in the neighbouring nucleus. Here we report measurements of the half-life and decay energy for the decay of 100Sn, the heaviest doubly magic nucleus with equal numbers of protons and neutrons. In the b-decay of 100Sn, a large fraction of the strength is observable because of the large decay energy. We determine the largest Gamow-Teller strength so far measured in allowed nuclear b-decay, establishing the 'superallowed' nature of this Gamow-Teller transition. The large strength and the low-energy states in the daughter nucleus, 100In, are well reproduced by modern, large-scale shell model calculations.

Dates and versions

in2p3-00714614 , version 1 (05-07-2012)

Identifiers

Cite

C.B. Hinke, M. Böhmer, P. Boutachkov, T. Faestermann, H. Geissel, et al.. Superallowed Gamow-Teller decay of the doubly magic nucleus $^{100}$Sn. Nature, 2012, 486, pp.341-345. ⟨10.1038/nature11116⟩. ⟨in2p3-00714614⟩
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