Large angle elastic alpha scattering on a N=Z nucleus above A=40

Phys Rev Lett. 2002 Sep 23;89(13):132501. doi: 10.1103/PhysRevLett.89.132501. Epub 2002 Sep 5.

Abstract

Scattering of alpha particles from 44Ti, the lightest unstable alpha-particle nucleus above A=40, has been measured at backward angles. The "anomalous" order-of-magnitude enhancement that is characteristic of 40Ca and other light alpha-particle nuclei is not observed. Instead, the backward yield is similar to that observed for other nuclei heavier than 40Ca, and is well described with average optical model parameters.