PHOTOLUMINESCENCE SPECTRA OF ULTRADISPERSE DIAMOND

The first study of materials based on ultradisperse diamond produced b y detonation is reported. A luminescence band in the visible has been observed, and some of its structural features have been interpreted by analogy with the known luminescence bands of centers in synthetic and natural diamonds. A comparison of the spectra obtained from ultradisp erse diamond samples with the surface modified by different chemical t reatments suggests that their pattern is governed to a considerable ex tent by the presence of a graphitic layer on the grain surface. (C) 19 97 American Institute of Physics.