Spins, Electromagnetic Moments, and Isomers of 107-129Cd
D. T. Yordanov, D. L. Balabanski, J. Biero\'n, M. L. Bissell, K., Blaum, I. Budin\v{c}evi\'c, S. Fritzsche, N. Fr\"ommgen, G. Georgiev, Ch., Geppert, M. Hammen, M. Kowalska, K. Kreim, A. Krieger, R. Neugart, W., N\"ortersh\"auser, J. Papuga, S. Schmidt
TL;DR
This study investigates neutron-rich cadmium isotopes up to N=82 using laser spectroscopy, revealing new isomers and confirming shell model predictions through quadrupole moment measurements.
Contribution
It provides the first observation of long-lived isomers in 127Cd and 129Cd and confirms the shell model's linear quadrupole moment trend beyond the h11/2 shell.
Findings
First observation of isomers in 127Cd and 129Cd
Linear increase of quadrupole moments confirmed
Shell model behavior extends beyond h11/2 shell
Abstract
The neutron-rich isotopes of cadmium up to the N=82 shell closure have been investigated by high-resolution laser spectroscopy. Deep-UV excitation at 214.5 nm and radioactive-beam bunching provided the required experimental sensitivity. Long-lived isomers are observed in 127Cd and 129Cd for the first time. One essential feature of the spherical shell model is unambiguously confirmed by a linear increase of the 11/2- quadrupole moments. Remarkably, this mechanism is found to act well beyond the h11/2 shell.
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