Abstract
All available values in the mass region , relevant to the isovector electric quadrupole operator are compared to the theoretical values based on Chung-Wildenthal shell-model wave functions with harmonic oscillator radial wave functions, and some selected cases are compared with local and energy dependent Woods-Saxon potential wave functions. The empirical effective charges deduced from these comparisons are insensitive to differences in mass, state, and dominant single-nucleon orbit. The value for the effective charge parameter extracted in the harmonic oscillator approximation is consistent with . The values extracted with local and energy-dependent Woods-Saxon potentials, which are more meaningfully related to the underlying structure of the isovector polarizability, are consistent with and , respectively. Some inadequacies in the experimental data and theoretical models are discussed and improvements are suggested.
NUCLEAR STRUCTURE nuclei: comparison of experimental isovector matrix elements with shell-model predictions; extraction of the isovector effective charge; full basis shell-model wave functions; Chung-Wildenthal Hamiltonians.
- Received 25 June 1982
DOI:https://doi.org/10.1103/PhysRevC.26.2247
©1982 American Physical Society