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Lower Energy α Elastic Scattering on 20Ne and Anomaly of α+20Ne Scattering System

The α+20Ne elastic scattering angular distributions at lower incident energies of Eα = 12.7−31.1 MeV have been analyzed by using the α-folding potential based on the α+16 O structure model of the 20Ne nucleus. The α-folding potential with a standard Woods—Saxon type imaginary part, can reasonably describe experimental cross sections and the anomalous large angle scattering (ALAS) features. The anomaly of the α+20Ne scattering system is further confirmed in the lower incident energy region.