Global optical potential for alpha-particles with energies up to 80 MeV

Global (mass and energy) dependence of optical potential for alpha-particles up to 80 MeV has been received. A Wood-Saxon form-factor for macroscopic potential has been used and recommendations from works of M. Nolte, H. Machner, J. Bojowald about global dependence with energies higher than 80 MeV and L.W. Put and A.M.J. Paans about geometry of optical potential has been taken into account. Energy and mass dependences of parameters of semi-microscopic α-particle potential have been investigated for the first time. In general a good description of elastic and inelastic differential and total reation cross sections for different nuclei using the revealed global parameters has been received within the framework of macroscopic and semi-microscopic approaches. (author)