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1. 发明授权

US4379248A Ionization chamber having coaxially arranged cylindrical electrodes 失效
标题翻译：电离室具有同轴排列的圆柱形电极
公开(公告)号：US4379248A
公开(公告)日：1983-04-05
申请号：US36236
申请日：1979-05-04
申请人： Naoki Wakayama , Hideshi Yamagishi , Toshimasa Tomoda , Hiroji Tanaka
发明人： Naoki Wakayama , Hideshi Yamagishi , Toshimasa Tomoda , Hiroji Tanaka
IPC分类号： G01T1/185 , H01J47/02 , H01J1/92 , H01J17/04
CPC分类号： H01J47/02
摘要： An ionization chamber comprises a plurality of cylindrical electrodes which are coaxially arranged, and a casing which holds the cylindrical electrodes in it under the condition allowing the axial shifting of the edges of the cylindrical electrodes but preventing the radial shifting of the cylindrical electrodes whereby the slight relative deviation of parts for the ionization chamber can be minimized during use at high temperature or during a severe thermal cycle.
摘要翻译：电离室包括同轴布置的多个圆柱形电极和在允许圆柱形电极的边缘轴向移动但防止圆柱形电极的径向移动的条件下将圆柱形电极保持在其中的壳体，由此轻微在高温使用期间或在严重的热循环期间，电离室的部件的相对偏差可以最小化。

2. 发明授权

US4682036A Gamma ray compensation-type neutron ionization chamber 失效
标题翻译：伽马射线补偿型中子电离室
公开(公告)号：US4682036A
公开(公告)日：1987-07-21
申请号：US693889
申请日：1985-01-23
申请人： Naoaki Wakayama , Hideshi Yamagishi , Shinji Fukakusa , Toshimasa Tomoda
发明人： Naoaki Wakayama , Hideshi Yamagishi , Shinji Fukakusa , Toshimasa Tomoda
IPC分类号： H01J47/12 , G01T3/00 , G01T1/185
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。

3. 发明授权

US4228355A Method for shortening response time of logarithmic measuring apparatus 失效
标题翻译：缩短对数测量装置响应时间的方法
公开(公告)号：US4228355A
公开(公告)日：1980-10-14
申请号：US870530
申请日：1978-01-18
申请人： Naoaki Wakayama , Toshiyuki Iida , Hideshi Yamagishi
发明人： Naoaki Wakayama , Toshiyuki Iida , Hideshi Yamagishi
IPC分类号： G01T1/17 , G01T1/185 , G06G7/24 , G21C17/14 , H01J39/28 , G06G7/12
CPC分类号： G06G7/24 , G01T1/185 , G21C17/14
摘要： A resistor of a specific resistance value is inserted between a signal line for transmitting ionization chamber current and a logarithmic amplifier. The specific resistance value is selected to be a proper value so that the value of a negative feedback capacitance of the logarithmic amplifier can be made zero or extremely small without instability phenomena such as an overshoot, ringing or oscillation. Accordingly, it is possible that the response time of a logarithmic measuring apparatus is extremely reduced in a small input-current region.
摘要翻译：在用于传输电离室电流的信号线和对数放大器之间插入电阻值的电阻器。电阻值被选择为适当的值，使得对数放大器的负反馈电容的值可以为零或极小而没有不稳定现象，例如过冲，振铃或振荡。因此，可以在小的输入电流区域中极大地降低对数测量装置的响应时间。

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