ELECTRON-MOMENTUM SPECTROSCOPY OF THE CORE STATE OF SOLID CARBON

Electron-momentum spectroscopy [binary encounter (e, 2e)] experimental results are presented for the core state of an amorphous carbon allot rope. The (e, 2e) cross section has two identifiable regions. One is a narrow-energy-width core-band peak that does not disperse with moment um. At higher binding energies there is an energy-diffuse multiple-sca ttering continuum, which is a consequence of (e, 2e) collisions with c ore electrons that are accompanied by inelastic scattering of one or m ore of the incoming or outgoing electrons. Comparisons of experimental momentum distributions with the Hartree-Fock atomic carbon is orbital are presented for both regions.