Local suppression of collectivity in the N=80 isotones at the Z=58 subshell closure
Bauer, C., Rainovski, G., Pietralla, N., Bianco, D., Blazhev, A., Bloch, T., Bonig, S., Damyanova, A., Danchev, M., Gladnishki, K.A., Kroll, T., Leske, J., Iudice, N. L., Moller, T., Moschner, K., Pakarinen, J., Reiter, P., Scheck, M., Seidlitz, M., . . . De Witte, H. (2013). Local suppression of collectivity in the N=80 isotones at the Z=58 subshell closure. Physical Review C, 88, Article 021302R. https://doi.org/10.1103/PhysRevC.88.021302
Published in
Physical Review CDate
2013Copyright
© 2013 American Physical Society. Published in this repository with the kind permission of the publisher.
Background: Recent data on N = 80 isotones have suggested that the proton π(1g7/2) subshell closure at Z = 58
has an impact on the properties of low-lying collective states.
Purpose: Knowledge of the B(E2; 2+
1 → 0+
1 ) value of 140Nd is needed in order to test this conjecture.
Method: The unstable, neutron-rich nucleus 140Nd was investigated via projectile Coulomb excitation at the
REX-ISOLDE facility with the MINIBALL spectrometer.
Results: The B(E2) value of 33(2) W.u. expands the N = 80 systematics beyond the Z = 58 subshell closure.
Conclusions: The measurement demonstrates that the reduced collectivity of 138Ce is a local effect possibly
due to the Z = 58 subshell closure and requests refined theoretical calculations. The latter predict a smoothly
increasing trend.
Publisher
American Physical SocietyISSN Search the Publication Forum
0556-2813Keywords
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