Systematics of Isospin Mixing in Proton Elastic Scattering from Light Nuclei

The effects of isospin mixing observed by isospin-forbidden resonant proton scattering from the stable, self-conjugate, even-even nuclei exhibit a simple dependence on target mass number $A$. Furthermore, for $A=8n+4\mathrm{}$, $n$ integral, the mixing is systematically a factor of 5 larger than for $A=8n$ The relation between this behavior and the trends of other relevant nuclear properties is discussed.