Excitation functions of (n, α) reaction cross-sections for some important isotopes from threshold to 20 MeV

► Excitation functions for 53,42Ca, 57Fe isotopes having no entries in the EXFOR. ► Emphasis on Gilbert Cameron formalism for level density calculations. ► Suitability of Avrigeanu's alpha potential for the (n, α) reaction cross-sections. ► Supports the ENDF/B-VI data library.