  We describe a QCD based model which incorporates the main properties of the
inclusive particle distributions expected for diffractive processes, including
the diffractive dissociation at high energies. We study, in turn, the total
cross section, $\sigma_{tot}$, the differential elastic, $d\sigma_{el}/dt$,
cross section, the dependence of the single proton dissociation cross section,
$\xi d^{SD}/d\xi $, on the momentum fraction, $\xi = 1-x_L$, lost by the
leading proton, the multiplicity distributions in inelastic (non-diffractive)
collisions and in the processes of dissociation. Besides this we calculate the
mean transverse momenta of the `wee partons' (secondaries) produced in the case
of dissociation (that is in the processes with a large rapidity gap) and
compare it with that in inelastic interactions.
