3D-ELECTRON MOMENTUM DENSITY OF GRAPHITE

The complete 3D-electron momentum density (EMD) of solids can be measu red by the coincident detection of an inelastically scattered hard X-r ay photon and its recoil electron (i.e. a so-called (gamma,e gamma) ex periment). To avoid multiple scattering of the recoil electron the exp eriment has been performed with a 22 nm thin graphite foil made by las er plasma ablation. The experimental EMD is compared with a pseudopote ntial calculation. Experiments have been made both at the European Syn chrotron Radiation Facility at Grenoble, France, and at the PETRA stor age ring of DESY, Hamburg, Germany.