  In this work we derive sum rules for orbital angular momentum(OAM) resolved
electron magnetic chiral dichroism (EMCD) which enable the evaluation of the
strength of spin and orbital components of the atomic magnetic moments in a
crystalline sample. We also demonstrate through numerical simulations that
these rules appear to be only slightly dependent from the dynamical diffraction
of the electron beam in the sample, making possible their application without
the need of additional dynamical diffraction calculations.
