The orientation of the OH? dipole in an optically anisotropie crystal: An application to the OH? dipole in topaz |
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Authors: | Keiji Shinoda Nobuyuki Aikawa |
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Institution: | 1. Department of Geosciences, Faculty of Science, Osaka City University Sugimoto, Sumiyoshi, 558, Osaka, Japan
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Abstract: | For the purpose of determining the orientation of the OH? dipole in an optically anisotropic crystal, distribution of polarized IR absorbance is formulated under Fourier transform microspectroscopy. The formulatd absorbance distribution suggests that the degree of pleochroism of absorbance depends on the angle between the orientation of the OH? dipole and the principal orientation of the optically anisotropic crystal. As its application, the general orientation of the OH? dipole in topaz is determined to be inclined 27.3° from the c-axis in (010). |
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