  In the framework of Anisotropic Chromo Dynamics, a non-perturbative model of
QCD based on magnetic condensation in the vacuum, we develope a picture of the
Pomeron. Within this model we are able to calculate the diffractive
contribution to deep inelastic scattering in the small Bjorken x region,
actually probed at Hera. We calculate the diffractive structure function of the
proton and make the comparison with the experimental data of Zeus and H1
collaborations. Good agreement with the experimental data, both for the
diffractive structure function $F_2^D$ and for the ''structure function'' of
the Pomeron, is achieved.
