Abstract
The positron spectra and half lives of all the mirror nuclei () with have been systematically measured with a 180°-deflection uniform-magnetic-field spectrometer. The ground-state transition energies were used to compute Coulomb-energy differences between mirror pairs. Deviations of these Coulomb-energy differences from a smooth variation with are explained by a nuclear shell model using the potential well of an isotropic harmonic oscillator. The data support a symmetry for the proton wave functions characteristic of the state of lowest seniority, with magic-number effects at as well as . Comparison of the ft values obtained with experimental nuclear magnetic moments gives the following values for the partial coupling constants for the Fermi and Gamow-Teller interactions: , . Nuclear radii from -mesic atoms, when properly interpreted, are shown to be in agreement with radii deduced from Coulomb energy differences.
- Received 4 June 1959
DOI:https://doi.org/10.1103/PhysRev.117.1297
©1960 American Physical Society