Measurement and folding-potential analysis of the elastic α-scattering on light nuclei

Differential cross sections of α-elastic scattering have been measured for the target nuclei¹¹B,¹²C,¹³C,¹⁴N,¹⁵N, and¹⁶O at E=48.7 and 54.1 MeV and for the nuclei¹⁷O,¹⁸O, and²⁰Ne at E=54.1 MeV. The experimental results were analysed in terms of the optical model using different complex potentials. Special emphasis is given to the application of the double-folding approach for the real part of the potential. The imaginary part is expressed in terms of Fourier-Bessel functions. Differential cross sections for the α-¹⁶O scattering over a wide energy range and for the elastic α-scattering for nuclei in the mass range A=11 up to A=24 at E=54.1 MeV are analysed by this method. A close correlation between the absorptive part of the potential and nuclear deformation is observed.