Observation of isomeric decays in the $r$-Process waiting-point nucleus $^{130}Cd_{82}$ - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review Letters Year : 2007

Observation of isomeric decays in the $r$-Process waiting-point nucleus $^{130}Cd_{82}$

A. Jungclaus
  • Function : Author
M. Pfützner
  • Function : Author
S. Piétri
  • Function : Author
E. Werner-Malento
  • Function : Author
F. Nowacki
A. Poves
D. Rudolph
  • Function : Author
Z. Podolyak
  • Function : Author
P. H. Regan
  • Function : Author
P. Detistov
  • Function : Author
S. Lalkovski
  • Function : Author
V. Modamio
  • Function : Author
J. Walker
  • Function : Author
K. Andgren
  • Function : Author
J. Benlliure
  • Function : Author
G. Benzoni
A. M. Bruce
  • Function : Author
E. Casarejos
  • Function : Author
B. Cederwall
  • Function : Author
F. C. L. Crespi
  • Function : Author
B. Hadinia
  • Function : Author
M. Hellström
  • Function : Author
G. Ilie
  • Function : Author
J. Jolie
  • Function : Author
A. Khaplanov
  • Function : Author
M. Kmiecik
  • Function : Author
R. Kumar
  • Function : Author
A. Maj
S. Mandal
  • Function : Author
S. Myalski
  • Function : Author
S. J. Steer
  • Function : Author
O. Wieland
  • Function : Author

Abstract

The $\gamma$ decay of excited states in the waiting-point nucleus 130Cd82 has been observed for the first time. An 8+ two-quasiparticle isomer has been populated both in the fragmentation of a 136Xe beam as well as in projectile fission of 238U, making 130Cd the most neutron-rich N=82 isotone for which information about excited states is available. The results, interpreted using state-of-the-art nuclear shell-model calculations, show no evidence of an N=82 shell quenching at Z=48. They allow us to follow nuclear isomerism throughout a full major neutron shell from 98Cd50 to 130Cd82 and reveal, in comparison with 76Ni48 one major proton shell below, an apparently abnormal scaling of nuclear two-body interactions.

Dates and versions

in2p3-00195148 , version 1 (10-12-2007)

Identifiers

Cite

A. Jungclaus, L. Caceres, M. Gorska, M. Pfützner, S. Piétri, et al.. Observation of isomeric decays in the $r$-Process waiting-point nucleus $^{130}Cd_{82}$. Physical Review Letters, 2007, 99, pp.132501. ⟨10.1103/PhysRevLett.99.132501⟩. ⟨in2p3-00195148⟩
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