Inelastic effects in Lorentz microscopy

Abstract An energy-filtering electron microscope has been used to determine experimentally the contribution of inelastic scattering effects to the Lorentz contrast of diverging magnetic wall images. The importance of retaining only the elastic image is clearly demonstrated. An incoherent imaging theory seems adequate to account for the inelastic electrons. The broadening of the angular distribution of the inelastic electrons explains the decrease in the contrast when the defocusing distance increases