Observation of isomeric decays in the $r$-Process waiting-point nucleus $^{130}Cd_{82}$
A. Jungclaus
,
L. Caceres
(1)
,
M. Gorska
(1)
,
M. Pfützner
,
S. Piétri
,
E. Werner-Malento
,
H. Grawe
(1)
,
K. Langanke
(1)
,
G. Martínez-Pinedo
(1)
,
F. Nowacki
(2)
,
A. Poves
,
J.J. Cuenca-García
(1)
,
D. Rudolph
,
Z. Podolyak
,
P. H. Regan
,
P. Detistov
,
S. Lalkovski
,
V. Modamio
,
J. Walker
,
P. Bednarczyk
(1)
,
P. Doornenbal
(1)
,
H. Geissel
(1)
,
J. Gerl
(1)
,
J. Grebosz
(1)
,
I. Kojouharov
(1)
,
N. Kurz
(1)
,
W. Prokopowicz
(1)
,
H. Schaffner
(1)
,
H. J. Wollersheim
(1)
,
K. Andgren
,
J. Benlliure
,
G. Benzoni
,
A. M. Bruce
,
E. Casarejos
,
B. Cederwall
,
F. C. L. Crespi
,
B. Hadinia
,
M. Hellström
,
R. Hoischen
(1)
,
G. Ilie
,
J. Jolie
,
A. Khaplanov
,
M. Kmiecik
,
R. Kumar
,
A. Maj
,
S. Mandal
,
F. Montes
(1)
,
S. Myalski
,
G.S. Simpson
(3)
,
S. J. Steer
,
S. Tashenov
(1)
,
O. Wieland
A. Jungclaus
- Function : Author
M. Pfützner
- Function : Author
S. Piétri
- Function : Author
E. Werner-Malento
- Function : Author
F. Nowacki
- Function : Author
- PersonId : 748924
- IdHAL : frederic-nowacki
- ORCID : 0000-0002-7854-8717
A. Poves
- Function : Author
- PersonId : 755249
- ORCID : 0000-0001-7539-388X
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
- Function : Author
- PersonId : 755374
- ORCID : 0000-0002-7938-0338
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
- Function : Author
- PersonId : 755162
- ORCID : 0000-0002-1142-8067
- IdRef : 219941858
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.