Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Luminescence in diamonds of the Sao Luiz placer (Brazil). / Mironov, V. P.; Rakevich, A. L.; Stepanov, F. A. и др.
в: Russian Geology and Geophysics, Том 56, № 5, 01.05.2015, стр. 729-736.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Luminescence in diamonds of the Sao Luiz placer (Brazil)
AU - Mironov, V. P.
AU - Rakevich, A. L.
AU - Stepanov, F. A.
AU - Emel'yanova, A. S.
AU - Zedgenizov, D. A.
AU - Shatsky, V. S.
AU - Kagi, H.
AU - Martynovich, E. F.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Plates made of diamonds from the Sao Luiz province (Brazil) were investigated by confocal scanning luminescence microscopy. The samples have many macroinhomogeneities (cracks and inclusions), but there is a quasi-uniform distribution of luminescence centers in the bulk. At all investigated points of the crystals, the same group of centers was observed: N3, H4, 575, and a red band with a maximum at 690-700. nm. The visible nonuniformities in the distribution of luminescence over the area of the plates are determined by relatively small fluctuations in the ratio of the intensities of individual bands in the spectra. Nitrogen centers of different degrees of aggregation (H4, N3, and 575. nm, with four, three, and one nitrogen atom, respectively) coexist in these crystals. In the same zones of the samples, the distribution of blue luminescence (N3 centers) is diffuse (uniform), but the distribution of yellow-green luminescence is characterized by layering on (111). This might be a consequence of the tangential growth of octahedron faces or a result of plastic deformation of the crystals and dislocations along (111).
AB - Plates made of diamonds from the Sao Luiz province (Brazil) were investigated by confocal scanning luminescence microscopy. The samples have many macroinhomogeneities (cracks and inclusions), but there is a quasi-uniform distribution of luminescence centers in the bulk. At all investigated points of the crystals, the same group of centers was observed: N3, H4, 575, and a red band with a maximum at 690-700. nm. The visible nonuniformities in the distribution of luminescence over the area of the plates are determined by relatively small fluctuations in the ratio of the intensities of individual bands in the spectra. Nitrogen centers of different degrees of aggregation (H4, N3, and 575. nm, with four, three, and one nitrogen atom, respectively) coexist in these crystals. In the same zones of the samples, the distribution of blue luminescence (N3 centers) is diffuse (uniform), but the distribution of yellow-green luminescence is characterized by layering on (111). This might be a consequence of the tangential growth of octahedron faces or a result of plastic deformation of the crystals and dislocations along (111).
KW - Defect
KW - Diamond
KW - Laser
KW - Luminescence
KW - Microscopy
KW - Spectrum
UR - http://www.scopus.com/inward/record.url?scp=84928816826&partnerID=8YFLogxK
U2 - 10.1016/j.rgg.2015.04.004
DO - 10.1016/j.rgg.2015.04.004
M3 - Article
AN - SCOPUS:84928816826
VL - 56
SP - 729
EP - 736
JO - Russian Geology and Geophysics
JF - Russian Geology and Geophysics
SN - 1068-7971
IS - 5
ER -
ID: 25487736