Abstract
The imaginary part of the optical potential for nuclear ion-ion scattering in the energy range 20 MeV ≲E/A ≲ 200 MeV is derived using Feshbach's projection formalism. It is defined as the effective absorptive potential in the projected one-body Schroedinger equation for the relative motion of the colliding nuclei. Calculations are done in the Thomas-Fermi approximation, which accounts in a simple way for all phase-space effects as well as for the finite size of the ions. Intrinsic excitations are considered to be of one particle — one hole type in either of the ions, the other remaining in its ground state. The effective two-body interaction is taken to be of finite range. Further simplifications of the model consist in neglecting antisymmetrization between the mutual wave functions of the two ions and in the omission of the Coulomb energy.
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Blin, A.H., Brack, M., Hiller, B. et al. The absorptive part of the nucleus-nucleus potential in a semiclassical approach. Z. Physik A - Atomic Nuclei 328, 431–444 (1987). https://doi.org/10.1007/BF01289629
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DOI: https://doi.org/10.1007/BF01289629