-
公开(公告)号：EP0638825A3
公开(公告)日：1995-11-15
申请号：EP94305975.8
申请日：1994-08-12
IPC分类号： G01T1/26
CPC分类号： G01T1/26
摘要： A method of manufacturing a radiation sensor element is disclosed. The method includes providing a diamond body which comprises crystalline diamond material which has a nitrogen impurity concentration of less than 150 ppm. The body is typically a synthetic diamond manufactured by a high temperature / high pressure process, or by a chemical vapour deposition process. The body is hydrogenated to cause atomic hydrogen to be incorporated into the diamond crystal lattice. Hydrogenation can be carried out by ion implantation, or by exposing the body to a hydrogen plasma. Where the sensor element is to be used as a counting diamond, electrical contacts are formed on the body, for example by ion implantation.
-
公开(公告)号：EP0312392A1
公开(公告)日：1989-04-19
申请号：EP88309661.2
申请日：1988-10-14
IPC分类号： C09K11/63
CPC分类号： C09K11/63
摘要： A material capable of thermoluminescence comprising cubic boron nitride which, if it contains one or more of the impurities set out below, contains said impurities in an amount not exceeding that specified in the content column:
Inpurity
Content (ppm)
Carbon
1100
Oxygen
1500
Silicon
100
Phosphorus
30
Titanium
30
Beryllium
1摘要翻译： 能够具有热释光性的材料包括立方氮化硼，如果它含有下列一种或多种杂质，则其含量不超过含量列中规定的量：
-
-
公开(公告)号：EP0614094A2
公开(公告)日：1994-09-07
申请号：EP94301512.3
申请日：1994-03-02
发明人： Nam, Tom Leong , Araikum, Shawn , Keddy, Rex James
CPC分类号： G01T1/161 , A61B6/4258 , G01T1/202 , G01T1/26
摘要： The invention provides a method of detecting and monitoring ionising radiation such as nuclear radiation. The method comprises providing a diamond radiation sensor element (10) having a nitrogen concentration not exceeding 20 ppm and which is optimised for phosphorescent response, and exposing it to ionising radiation. The resulting phosphorescent response of the sensor element is then monitored, typically over a period of at least 20 seconds. The invention extends to the sensor element itself, and to apparatus employing the sensor.
摘要翻译： 本发明提供了一种检测和监测核辐射等电离辐射的方法。 该方法包括提供氮浓度不超过20ppm的金刚石辐射传感器元件（10），并针对磷光反应进行优化，并将其暴露于电离辐射。 然后通常在至少20秒的时间段内监测所得到的传感器元件的磷光反应。 本发明延伸到传感器元件本身以及使用该传感器的设备。
-
公开(公告)号：EP0560627A2
公开(公告)日：1993-09-15
申请号：EP93301898.8
申请日：1993-03-12
摘要： A method of monitoring nuclear radiation comprises providing a diamond radiation sensor element (10) having a nitrogen impurity concentration of less than 150 ppm. The sensor element is subjected to nuclear radiation, while being stimulated with light of a selected wavelength or range of wavelengths, preferably in the ultraviolet or near- ultraviolet range, resulting in light emissions from the sensor element. Typically, the sensor element is fixed to the end of an optical fibre (12), the far end (14, 16) of the fibre being used to channel stimulating light to the sensor element and to feed resultant light emissions from the sensor element to a photomultiplier tube (20). The invention includes apparatus for carrying out the method.
摘要翻译： 监测核辐射的方法包括提供具有小于150ppm的氮杂质浓度的金刚石辐射传感器元件（10）。 传感器元件受到核辐射，同时受到选定波长或波长范围的光的刺激，优选在紫外线或近紫外线范围内，导致来自传感器元件的光发射。 通常，传感器元件被固定到光纤（12）的末端，光纤的远端（14,16）被用于将刺激光引导到传感器元件并且将来自传感器元件的合成光发射到 一个光电倍增管（20）。 本发明包括用于执行该方法的设备。
-
公开(公告)号：EP0384084B1
公开(公告)日：1993-06-16
申请号：EP89313594.7
申请日：1989-12-27
-
公开(公告)号：EP0614094B1
公开(公告)日：2000-06-07
申请号：EP94301512.3
申请日：1994-03-02
发明人： Nam, Tom Leong , Araikum, Shawn , Keddy, Rex James
CPC分类号： G01T1/161 , A61B6/4258 , G01T1/202 , G01T1/26
-
公开(公告)号：EP0559448B1
公开(公告)日：1998-07-15
申请号：EP93301612.3
申请日：1993-03-03
CPC分类号： G01T1/161 , A61B6/4258 , G01T1/26
-
公开(公告)号：EP0614094A3
公开(公告)日：1995-01-25
申请号：EP94301512.3
申请日：1994-03-02
发明人： Nam, Tom Leong , Araikum, Shawn , Keddy, Rex James
CPC分类号： G01T1/161 , A61B6/4258 , G01T1/202 , G01T1/26
摘要： The invention provides a method of detecting and monitoring ionising radiation such as nuclear radiation. The method comprises providing a diamond radiation sensor element (10) having a nitrogen concentration not exceeding 20 ppm and which is optimised for phosphorescent response, and exposing it to ionising radiation. The resulting phosphorescent response of the sensor element is then monitored, typically over a period of at least 20 seconds. The invention extends to the sensor element itself, and to apparatus employing the sensor.
-
公开(公告)号：EP0479625A3
公开(公告)日：1992-05-27
申请号：EP91309177.3
申请日：1991-10-07
IPC分类号： G01T3/08
CPC分类号： G01T3/08
摘要： A neutron detector is formed from a layer of polycrystalline diamond (12, 24, 40) which is deposited by a chemical vapour deposition process. The diamond material contains 10 B as a dopant, in a concentration of 1 000 ppm or less. In one embodiment, the layer of diamond material is deposited on a supporting substrate (10). Advantageously, the substrate itself may comprise a layer of diamond material. In another embodiment, the substrate comprises a layer of conductive or semiconductive material (22). The diamond material is deposited on top of the substrate, with at least two regions in contact with the semiconductive material. A central portion of the semiconductive material is etched away, and electrical contacts (26, 28) are applied to the remaining portions (22.1, 22.2) of the semiconductive substrate. An advantage of the neutron detector of the invention is that the diamond layer is very thin, less than 50 f Lm thick, so that the sensitivity of the detector to other radiation, particularly y radiation, is reduced.
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.012 秒)
