  Previous analytical formulas in the Glauber model for high-energy
nucleus-nucleus collisions developed by Wong are utilized and extended to study
antiproton-nucleus annihilations for both high and low energies, after taking
into account the effects of Coulomb and nuclear interactions, and the change of
the antiproton momentum inside a nucleus. The extended analytical formulas
capture the main features of the experimental antiproton-nucleus annihilation
cross sections for all energies and mass numbers. At high antiproton energies,
they exhibit the granular property for the lightest nuclei and the black-disk
limit for the heavy nuclei. At low antiproton energies, they display the effect
of the antiproton momentum increase due to the nuclear interaction for the
light nuclei, and the effect of the magnification due to the attractive Coulomb
interaction for the heavy nuclei.
