Title: Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2; 2(1)(+) -> 0(1)(+)) value of Sm-142
Authors: Stegmann, R ×
Bauer, C
Rainovski, G
Pietralla, N
Stahl, C
Boenig, S
Ilieva, S
Blazhev, A
Damyanova, A
Danchev, M
Gladnishki, K
Jolie, J
Lutter, R
Pakarinen, J
Radeck, D
Rapisarda, E
Reiter, P
Scheck, M
Siebeck, B
Stora, T
Thoele, P
Thomas, T
Thurauf, M
Vermeulen, M. J
Voulot, D
Warr, N
Wenander, F
Werner, V
De Witte, Hilde #
Issue Date: 2015
Publisher: American Physical Society
Series Title: Physical Review C vol:91 issue:5
Article number: 054326
Abstract: It was shown that the evolution of the B(E2; 2+1 → 0+1 ) values in N = 80 isotones from Te to Nd is affected by the underlying subshell structure. This manifests itself in the observation of the local suppression of the B(E2) value at Z = 58 with respect to the neighboring nuclei 136Ba and 140Nd. To investigate this shell sensitivity toward the Z = 64 subshell gap, the B(E2; 2+1 → 0+1 ) value of the unstable nucleus 142Sm was measured utilizing the projectile Coulomb excitation technique. The radioactive ion beam (RIB) experiment was performed at the REX-ISOLDE facility at CERN. The B(E2) value of 32 (4) W.u. reflects the impact of the π(1g7/2 2d5/2) subshell closure at Z = 64 with respect to a linear scaling of collectivity with valence proton number.
ISSN: 2469-9985
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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