| RELATION BETWEEN THE OPTICAL ANISO-TROPY INDEX AND THE POLARIZABILITY ELLIPSOID OF ATOM GROUPS |
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| 引用本文： | 叶大年. RELATION BETWEEN THE OPTICAL ANISO-TROPY INDEX AND THE POLARIZABILITY ELLIPSOID OF ATOM GROUPS[J]. 中国科学B辑(英文版), 1989, 0(3) |
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| 作者姓名： | 叶大年 |
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| 作者单位： | Institute of |
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| 摘 要： | The optical anisotropy index is a new conception which has been proposed by the author of this paper on the basis of the Gladstone refractivity (i.e. specific energy by Larsen). The conception is very useful for studying the structural-optical mineralogy. The polarizability ellipsoid of atom groups in minerals may be obtained from the optical anisotropy index; conversely, when the crystal structure, orientation, and the polarizability ellipsoid of atom groups are known, the optical anisotropy index of the minerals may be calculated, and then three principal refractive indices, and the optical axis angles may be calculated, too. The calculated values of optical properties are in very good agreement with the experimental values. This calculation method is much simpler thanBragg's for the carbonates, and the precision of calculated values is much higher than that of Bragg's. The principle of calculation method is suitable for all the minerals containing some strong anisotropic atom groups, besides carbonat
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RELATION BETWEEN THE OPTICAL ANISO-TROPY INDEX AND THE POLARIZABILITY ELLIPSOID OF ATOM GROUPS |
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| YE DA-NIAN. RELATION BETWEEN THE OPTICAL ANISO-TROPY INDEX AND THE POLARIZABILITY ELLIPSOID OF ATOM GROUPS[J]. Science in China(Chemistry), 1989, 0(3) |
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| Authors: | YE DA-NIAN |
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| Abstract: | The optical anisotropy index is a new conception which has been proposed by the author of this paper on the basis of the Gladstone refractivity (i.e. specific energy by Larsen). The conception is very useful for studying the structural-optical mineralogy. The polarizability ellipsoid of atom groups in minerals may be obtained from the optical anisotropy index; conversely, when the crystal structure, orientation, and the polarizability ellipsoid of atom groups are known, the optical anisotropy index of the minerals may be calculated, and then three principal refractive indices, and the optical axis angles may be calculated, too. The calculated values of optical properties are in very good agreement with the experimental values. This calculation method is much simpler thanBragg's for the carbonates, and the precision of calculated values is much higher than that of Bragg's. The principle of calculation method is suitable for all the minerals containing some strong anisotropic atom groups, besides carbonates. |
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| Keywords: | structural-optical mineralogy optical anisotropy index polarizability ellipsoid Gladstone equation. |
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