  In this paper we have tried to establish a theory for angular correlation
between the photo- and Auger electrons in the two-step double photoionization
of a rare gas atom. The basic finding of this paper is that a general
theoretical expression for the angular correlation function is established in
the problem of double photoionization of atoms in the presence of linearly
polarized monochromatic light. We consider the case of a xenon atom and the
incident light is of (94.5 eV) with arbitrary linear polarization. The
theoretical results are compared with the experiments done by K(\ddot{a}
)mmerling and Schmidt [J.Phys.B, 26,1141(1993)].
