Spatial distributions of energy deposited by an extensive air shower in the
atmosphere through ionization, as obtained from the CORSIKA simulation program,
are used to find the fluorescence light distribution in the optical image of
the shower. The shower image derived in this way is somewhat smaller than that
obtained from the NKG lateral distribution of particles in the shower. The size
of the image shows a small dependence on the primary particle type.Comment: 36 pages, 4 tables, 12 figure