High-resolution bunched-beam collinear laser spectroscopy was used to measure the optical hyperfine spectra of the 43−51Ca isotopes. The ground state magnetic moments of 49,51Ca and quadrupole moments of 47,49,51Ca were measured for the first time, and the 51Ca ground state spin I=3/2 was determined in a model-independent way. Our results provide a critical test of modern nuclear theories based on shell-model calculations using phenomenological as well as microscopic interactions. The results for the neutron-rich isotopes are in excellent agreement with predictions using interactions derived from chiral effective field theory including three-nucleon forces, while lighter isotopes illustrate the presence of particle-hole excitations of the 40Ca core in their ground state.
@article{arxiv.1504.04474,
title = {Ground-State Electromagnetic Moments of Calcium Isotopes},
author = {R. F. Garcia Ruiz and M. L. Bissell and K. Blaum and N. Frommgen and M. Hammen and J. D. Holt and M. Kowalska and K. Kreim and J. Menendez and R. Neugart and G. Neyens and W. Nortershauser and F. Nowacki and J. Papuga and A. Poves and A. Schwenk and J. Simonis and D. T. Yordanov},
journal= {arXiv preprint arXiv:1504.04474},
year = {2015}
}
Comments
Accepted as a Rapid Communication in Physical Review C