Abstract
The electric quadrupole moment Q for the ground state of was determined by the -NMR method applied to spin-polarized projectile fragments. From the measured quadrupole coupling constant, for in a Mg single crystal stopper the Q moment was deduced as As was the case in the previous result, the obtained Q moment is very close to that for the isotope in sharp contrast to the results of conventional shell-model calculations using constant effective charges. Comparison of the shell-model calculations indicates substantial reduction of the effective charges for isotopes with large ratios. The results were well accounted for in terms of dependent polarization charges as predicted by Bohr and Mottelson and by incorporating the decoupling feature of loosely bound particles.
- Received 30 December 2002
DOI:https://doi.org/10.1103/PhysRevC.67.064308
©2003 American Physical Society