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公开(公告)号：US4302696A
公开(公告)日：1981-11-24
申请号：US56265
申请日：1979-07-10
CPC分类号： H01J47/1216
摘要： A gamma-ray compensated ionization chamber having cylindrical multiplex electrodes comprises first cylindrical multiplex electrodes and second cylindrical multiplex electrodes being arranged in reverse orders to that of the first cylindrical multiplex electrodes in the longitudinal direction of the cylindrical electrodes to prevent the deterioration of compensating characteristics caused by the variation of an external temperature and variation of gamma-ray spectrum.
摘要翻译： 具有圆柱形多路复用电极的伽马射线补偿电离室包括第一圆柱形多路复用电极和第二圆柱形多路复用电极，其与圆柱形电极的纵向方向上的第一圆柱形多路复用电极的顺序相反排列，以防止引起的补偿特性的劣化 通过外部温度的变化和伽马射线谱的变化。
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公开(公告)号：US4682036A
公开(公告)日：1987-07-21
申请号：US693889
申请日：1985-01-23
CPC分类号： G01T3/00
摘要： A neutron ionization chamber of the gamma ray compensation type comprises a neutron-sensing ionization chamber portion having an electrode surface coated with a material for sensing neutrons, a gamma ray-sensing ionization chamber portion which has a low neutron sensitivity in comparison with the neutron sensitivity of said neutron-sensing material, a device for substracting ionization currents in the gamma ray-sensing ionization chamber portion from ionization currents in the neutron-sensing ionization chamber portion, and a coating material which is coated on an electrode surface of the gamma ray-sensing ionization chamber portion, the coating material including a material for sensing neutrons the percentage of which is less than the the percentage of the neutron sensing material of the neutron sensing ionization chamber portion.
摘要翻译： 伽马射线补偿型的中子电离室包括具有涂覆有用于感测中子的材料的电极表面的中子感测电离室部分，与中子灵敏度相比具有低中子灵敏度的伽马射线感测电离室部分 的所述中子感测材料，用于根据所述中子感测电离室部分中的电离电流来消除所述伽马射线感测电离室部分中的电离电流的装置，以及涂覆在所述伽马射线感测电离室部分的电极表面上的涂层材料， 感测电离室部分，涂层材料包括用于感测中子的材料，其百分比小于中子感测电离室部分的中子感测材料的百分比。
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3.发明授权
公开(公告)号：US4587429A
公开(公告)日：1986-05-06
申请号：US573915
申请日：1983-12-06
摘要： A method of improving the radiation resistant characteristic of a BF.sub.3 proportional counter, comprising a tube having electrodes provided thereon and BF.sub.3 gas filled therein, by subjecting the counter before use to any one of 10.sup.4 -2.times.10.sup.5 R gamma ray, 10.sup.4 -2.times.10.sup.5 R X-ray, or 10.sup.10 -10.sup.11 nvt thermal neutron with a direct current high voltage applied between the above stated electrodes. The counter thus adapted exhibits little deterioration even in the surroundings of strong gamma ray, X-ray, and thermal neutron flux, and can maintain a stable operation. In particular, since the upper limit of the radiation amount in the process of improving the radiation resistant characteristic is set at a low value, the remaining life of the BF.sub.3 proportional counter is not shortened unduely.
摘要翻译： PCT No.PCT / JP83 / 00074 Sec。 371日期：1983年12月6日 102（e）1983年12月6日授权PCT 1983年3月11日提交。一种提高BF3比例计数器的耐辐射特性的方法，包括其上设置电极的管和填充有BF 3气体的管， 使用在上述电极之间施加直流高电压的104-2×105Rγ射线，104-2×105 R X射线或1010-1011热中子中的任一种。 因此，即使在强伽马射线，X射线和热中子通量的环境中，这样调整的计数器也几乎没有劣化，并且可以保持稳定的操作。 特别是由于将耐辐射特性提高的过程中的辐射量的上限设定为低值，所以不会缩短BF3比例计数器的剩余寿命。
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公开(公告)号：US6040581A
公开(公告)日：2000-03-21
申请号：US84879
申请日：1998-05-28
申请人： Toyokazu Gotou , Shinji Fukakusa
发明人： Toyokazu Gotou , Shinji Fukakusa
CPC分类号： G01T3/00 , H01J47/1216
摘要： To eliminate deterioration in the saturation characteristics of gamma-rays, the total area of holes formed in a signal electrode which is arranged within a high-voltage electrode concentrically is set to a value equal to or smaller than 5% of the surface area of the signal electrode.
摘要翻译： 为了消除伽马射线的饱和特性的劣化，将设置在高压电极内的信号电极中形成的孔的总面积设定为等于或小于该高压电极的表面积的5％ 信号电极。
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