Orientation-dependent extended fine structure in electron-energy-loss spectra

The near-neighbor atomic environment in graphite is probed in two perpendicular directions by the selective analysis of the energy-loss spectra of 120-kV electrons scattered through such angles that the momentum exchange vector →q lies parallel and perpendicular to the graphite c axis. The radial distribution functions calculated from the extended fine structure above the carbon K edge show excellent agreement with the established atomic coordinates of graphite.