CARBON-1S NEAR-EDGE-ABSORPTION FINE-STRUCTURE IN GRAPHITE

High-resolution p(z)- and p(x,y)-projected fine structure for the 1s carbon core level in graphite are compared with symmetry-projected calculations. A very sharp transition occurs about 7.6 eV above the Fermi energy in the p(x,y) results, agreeing closely with the nondispersive sigma* band. An additional feature near 8.5 eV above the Fermi energy may be due to the GAMMA2- branch of the free-electron-like interlayer states. With a modest excitonic distortion, the p(z) results agree closely with the expected pi* band.