Key points are not available for this paper at this time.
Extended fine structure, equivalent to extended x-ray-absorption fine structure, has been observed on carbon K-ionization edges obtained with electron energy-loss spectroscopy utilizing 0. 75- to 5-nm radius probe sizes, and sampling as few as 10^4 atoms in times as short as 4 min. Radial distribution functions show the expected behavior for graphite and an amorphous carbon sample. A second "amorphous" sample, however, shows structure which suggests the existence of local tetrahedral coordination.
Batson et al. (Mon,) studied this question.