Antiproton-nucleus elastic and inelastic scattering at intermediate energies

Abstract

Using the experimental p̄N amplitude and multiple scattering theory, we obtained the antiproton optical potential at incident energies from 180 to 1800 MeV with the impulse approximation. It is found that the imaginary parts of the optical potential strengths are nearly constant between 130 and 140 MeV. The elastic data of the 180 MeV antiproton on 12C, 16O, 40Ca, and 208Pb and the inelastic data of the 180 MeV antiproton on 12C are analyzed within the framework of the eikonal approximation. The collective excitations to one-phonon levels are treated using the antiproton optical potential with the adiabatic approximation. The differential cross section of elastic scattering of 180 to 1833 MeV antiproton on 12C, on 16O, 40Ca, and 208Pb and the inelastic scattering of 180 to 1833 MeV antiproton 12C are predicted. Show more