Double scattering contributions in EELS. II. A comparison between EELFS and EXAFS

Taking into account up to double scattering contributions for the initial and final states, we analysed differences and similarities between EELFS and EXAFS. The effect of the electron momentum transfer on high energy EELFS oscillations is shown to be particularly important in the backscattering geometry where the 60, instead of ~ phase shift, would be preferentially selected in the EELFS oscillatory regime. Double scattering contributions are shown to add a term that should impose a small scattering angle dependence to the interatomic distances.