Ⅰa型褐色金刚石结构缺陷的同步辐射白光形貌特征

陈美华; 陈征; 狄敬如; 路凤香; 巫翔

Volume 30 Issue 2

Mar. 2005

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Article Navigation > Earth Science > 2005 > 30(2): 187-190

CHEN Mei-hua, CHEN Zheng, DI Jing-ru, LU Feng-xiang, WU Xiang, 2005. Structure Defects in Type Ⅰa Brown Diamonds by Polychromatic Synchrotron Radiation Topography. Earth Science, 30(2): 187-190.

Citation:

CHEN Mei-hua, CHEN Zheng, DI Jing-ru, LU Feng-xiang, WU Xiang, 2005. Structure Defects in Type Ⅰa Brown Diamonds by Polychromatic Synchrotron Radiation Topography. Earth Science, 30(2): 187-190.

CHEN Mei-hua, CHEN Zheng, DI Jing-ru, LU Feng-xiang, WU Xiang, 2005. Structure Defects in Type Ⅰa Brown Diamonds by Polychromatic Synchrotron Radiation Topography. Earth Science, 30(2): 187-190.

Citation:

CHEN Mei-hua, CHEN Zheng, DI Jing-ru, LU Feng-xiang, WU Xiang, 2005. Structure Defects in Type Ⅰa Brown Diamonds by Polychromatic Synchrotron Radiation Topography. Earth Science, 30(2): 187-190.

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Structure Defects in Type Ⅰa Brown Diamonds by Polychromatic Synchrotron Radiation Topography

1.
Gemmological Institute, China University of Geosciences, Wuhan 430074, China
2.
Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
3.
Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

Received Date: 2004-05-02
Available Online: 2022-06-22
Publish Date: 2005-03-25

Abstract

Abstract

Polychromatic synchrotron radiation (SR) is an effective method for the non-destructive study of diamond crystal defects. Its advantages include the use of intense X-ray, short exposure time, high collimation and high resolution. The SR method was applied to 31 diamond crystals from three major Chinese diamond mine areas: Mengyin in Shandong Province, Wafangdian in Liaoning Province and Yuanjiang area in Hunan Province. The diamond crystals generally showed structure deformation and had different degrees of deformation. Some diamonds with serious deformation demonstrated strong asterism and spot fragmentation in Laue pattern. Factors such as shape, contrast and the interior structure of reflexes in Laue patterns indicate the degree and complexity of crystal deformation.Resultsshow that the crystal imperfections have not obvious relationship to the intensity of the diamonds' brown color. It is likely that crystal defects correlate with the complex crystallization processes and deep environment of diamonds.
- structure defect,
- diamond,
- synchrotron radiation,
- polychromatic topography

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References(23)

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