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公开(公告)号：US5401283A
公开(公告)日：1995-03-28
申请号：US136493
申请日：1993-10-14
CPC分类号： B01J3/062 , C09K3/1409 , B01J2203/061 , B01J2203/062 , B01J2203/0645 , B01J2203/0655 , B01J2203/066 , B01J2203/068 , Y10T428/2991 , Y10T428/30
摘要： A synthetic diamond or cubic boron nitride particle is characterized by containing two or more stable isotopes of an element present in a ratio which is different to the ratio in which the isotopes exist in nature. The diamond or cubic boron nitride particle thus has a fingerprint. A preferred example of the element is nitrogen.
摘要翻译： 合成金刚石或立方氮化硼颗粒的特征在于含有两种或更多种稳定的同位素，其比例与同位素在自然界中存在的比率不同。 因此，金刚石或立方氮化硼颗粒具有指纹。 元素的优选实例是氮。
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公开(公告)号：US5097133A
公开(公告)日：1992-03-17
申请号：US287860
申请日：1988-12-21
申请人： Tom L. Nam , Robert C. Burns , Rex J. Keddy
发明人： Tom L. Nam , Robert C. Burns , Rex J. Keddy
摘要： Nuclear radiation is detected by applying electrical contacts to a synthetic diamond having a nitrogen impurity concentration of 25 to 150 parts per million. An electrical circuit is connected to the contacts and applies a DC bias voltage across the diamond. When the diamond is subjected to nuclear radiation, a change in the current or voltage in the circuit occurs which corresponds to the radiation intensity. The nuclear radiation may be any kind of radiation. The contacts are preferably attached directly to the diamond and are ohmic in nature.
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公开(公告)号：US4754140A
公开(公告)日：1988-06-28
申请号：US841171
申请日：1986-03-19
申请人： Tom L. Nam , Rex J. Keddy , Robert C. Burns
发明人： Tom L. Nam , Rex J. Keddy , Robert C. Burns
CPC分类号： C09K11/65
摘要： Diamond having a nitrogen content not exceeding 100 ppm and electrons or holes trapped at lattice imperfections within the crystal structure has been found to be a good thermoluminescent material. The diamond is produced by taking a diamond having a nitrogen content not exceeding 100 ppm and subjecting it to nuclear radiation.
摘要翻译： 已经发现氮含量不超过100ppm的金刚石和晶体结构内的晶格缺陷处的电子或空穴是一种良好的热发光材料。 该金刚石是通过使用氮含量不超过100ppm并进行核辐射的金刚石来制造的。
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