TY  - JOUR
AU  - Pakarinen, J. et al
AU  - Algora, A.
PY  - 2017
DA  - 2017//
TI  - Collectivity in Pb-196, Pb-198 isotopes probed in Coulomb-excitation experiments at REX-ISOLDE
T2  - J. Phys. G
JO  - Journal of Physics G
SP  - 064009
EP  - 10pp
VL  - 44
IS  - 6
PB  - Iop Publishing Ltd
KW  - Coulomb excitation
KW  - radioactive ion beams
KW  - gamma-ray spectroscopy
KW  - gamma transitions and level energies
AB  - The neutron-deficient Pb-196,Pb-198 isotopes have been studied in Coulomb-excitation experiments employing the Miniball gamma-ray spectrometer and radioactive ion beams from the REX-ISOLDE post-accelerator at CERN. The reduced transition probabilities of the first excited 2(+) states in Pb-196 and Pb-198 nuclei have been measured for the first time. Values of B (E2) = 18.2(-4.1)(+4.8) W. u. and B (E2) = 13.1(-3.5)(+4.9) W. u., were obtained, respectively. The experiment sheds light on the development of collectivity when moving from the regime governed by the generalised seniority scheme to a region, where intruding structures, associated with different deformed shapes, start to come down in energy and approach the spherical ground state.
SN  - 0954-3899
UR  - https://doi.org/10.1088/1361-6471/aa6753
DO  - 10.1088/1361-6471/aa6753
LA  - English
N1  - WOS:000400875800003
ID  - Pakarinen+Algora2017
ER  -