The complete set of optical fundamental functions is determined for diamond
in the range from 4 to 32 eV. The features of the bulk and surface charact
eristic energy loss spectra are elucidated and the functions n(eff)(E) and
epsilon(eff)(E) are calculated. The energies of volume and surface plasmons
are established. (C) 2000 MAIK "Nauka/Interperiodica".