Ca48-Ca40Radius Difference from Elastic Scattering of 104-MeVαParticles

Abstract

Elastic scattering of 104-MeV $\alpha$ particles from ${}_{}{}^{48,40}{}_{}{}^{}\mathrm{Ca}$ was measured between 3° and 110°. Optical-model fits were made using a Fourier-Bessel description of the real potential and also using density-dependent folding models. The average result for the difference between nuclear-matter rms radii is ${\mathcal{r}}_m\left({}_{}{}^{48}{}_{}{}^{}\mathrm{Ca}\right)-{\mathcal{r}}_m\left({}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}\right)=0.12\mathrm{}\pm 0.06$ fm. Comparisons are made with results obtained by other methods.