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1. 发明授权

US4492872A Albedo dosimeter encapsulation 失效
标题翻译：反照率剂量计封装
公开(公告)号：US4492872A
公开(公告)日：1985-01-08
申请号：US379694
申请日：1982-05-19
申请人： Bertram Burgkhart , Gabor Hassib , Ernst Piesch
发明人： Bertram Burgkhart , Gabor Hassib , Ernst Piesch
IPC分类号： G01T1/11 , G01T3/00
CPC分类号： G01T1/11
摘要： Albedo dosimeter encapsulation for measuring neutron and gamma radiation in at least two dosimeter zones, comprises a casing having cadmium or boron containing walls which have neutron absorbing capability. The casing has a front side which faces a radiation field and a rear side which faces a body which carries the encapsulation. The rear side of the casing is closed by a cadmium or boron containing rear wall having a first portion and a second portion. A cover is located at the front side of the casing and has a cadmium or boron containing wall portion and a window portion. The casing has a first zone for holding a first dosimeter means and a second zone for holding a second dosimeter means. The first zone is aligned with the cadmium or boron containing wall portion of the cover and the first portion of the rear wall. The second zone is aligned with the window portion of the cover and the second portion of the rear wall. The cadmium or boron containing wall portion of the cover has a neutron absorbing capability which is different from the neutron absorbing capability of the first portion of the rear wall. The first portion of the rear wall has a neutron absorbing capability which is different from the neutron absorbing capability of the second portion of the rear wall.
摘要翻译：用于在至少两个剂量计区域中测量中子和γ射线的反照率剂量计封装包括具有中子吸收能力的具有镉或硼的壁的外壳。壳体具有面向辐射场的前侧和面向承载封装体的背面。壳体的后侧由具有第一部分和第二部分的含镉或硼的后壁封闭。盖位于壳体的前侧，并且具有含镉或硼的壁部分和窗口部分。壳体具有用于保持第一剂量计装置的第一区域和用于保持第二剂量计装置的第二区域。第一区域与盖的镉或硼的壁部分和后壁的第一部分对准。第二区域与盖子的窗口部分和后壁的第二部分对准。盖的含镉或硼的壁部分具有与后壁第一部分的中子吸收能力不同的中子吸收能力。后壁的第一部分具有不同于后壁的第二部分的中子吸收能力的中子吸收能力。

2. 发明授权

US4385236A Passive dosimeter for detection of radon, thoron and daughters thereof 失效
标题翻译：用于检测氡气，钍气和钍气的被动剂量计
公开(公告)号：US4385236A
公开(公告)日：1983-05-24
申请号：US164558
申请日：1980-06-30
申请人： Gabor Hassib , Ernst Piesch
发明人： Gabor Hassib , Ernst Piesch
IPC分类号： G01T1/167 , G01T1/178 , G01T5/10 , G01T1/04
CPC分类号： G01T1/178 , G01T5/10 , Y10S250/02
摘要： In a passive dosimeter for the detection of radon and/or thoron and their daughters and including a diffusion chamber having two end faces, a first radioactive decay detector composed of a nuclear track detector foil or an integrating .alpha.-detector sealing one end face of the chamber, and a filter transmissive for radon and/or thoron, whereby the detector provides an indication of radon and thoron decay and the resultant daughters, there is further provided a second chamber corresponding in structure to the diffusion chamber and having two end faces, with one end face of the second chamber being sealed by the side of the filter directed away from the diffusion chamber, and a second radioactive decay detector substantially identical to the first detector sealing the other end face of the second chamber, with passages being provided between the second chamber and the environment of the dosimeter for passage of gas with radon and thoron and daughters to be measured into the second chamber. When the detector is a nuclear track detector foil, selected levels of the energy of .alpha.-particles impinging on the foil during exposure to such particles can be identified by first chemically pre-etching the foil for removing a layer of foil material to a depth corresponding to a selected .alpha.-particle energy level, and then performing an electrochemical etching operation on the foil for rendering the .alpha.-particle impingement tracks in the foil visible.
摘要翻译：在用于检测氡气和/或钍气及其女儿并且包括具有两个端面的扩散室的无源剂量计中，由核轨迹检测器箔或积分α分析器组成的第一放射性衰变检测器，腔室和用于氡气和/或钍气的透射式过滤器，由此检测器提供氡气和钍气衰变的指示以及所产生的女儿，还提供了在结构上对应于扩散室的第二腔室，并具有两个端面，所述第二室的一个端面由所述过滤器的侧面被密封以指向远离所述扩散室;以及第二放射性衰变检测器，其基本上与所述第一检测器密封所述第二室的另一端面相同，第二室和用于通过氡气和钍气和女儿的气体的剂量计的环境被测量到第二室呃当检测器是核轨道检测器箔片时，在暴露于这种颗粒期间撞击箔片的α-粒子的能量的选定水平可以通过首先化学预蚀刻箔片来识别，以将箔层材料层去除到相应的深度到所选择的α粒子能级，然后对箔进行电化学蚀刻操作，以使箔中的α-粒子冲击轨迹可见。

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