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    Secondary-standard ionization chamber, in particular for measuring the energy dose
    3.
    发明授权
    Secondary-standard ionization chamber, in particular for measuring the energy dose 失效
    二次标准电离室，特别是用于测量能量的剂量

    公开(公告)号：US4300050A

    公开(公告)日：1981-11-10

    申请号：US128528

    申请日：1980-03-10

    Applicant: Jozsef Hizo ,  Klaus Duftschmid

    Inventor： Jozsef Hizo ,  Klaus Duftschmid

    IPC: H01J47/02 ,  H01J39/28 ,  G01D18/00

    CPC classification number: H01J47/022 ,  G01T1/14

    Abstract: An ionization chamber for measuring an energy dose having a chamber wall with an electromagnetic radiation absorption characteristic equivalent to air, tissue or water and a neck part and being closed on all sides, an air compensation orifice; an outer electrode formed by a conductive coating on the inner surface of the chamber wall, an inner electrode and an electrically conductive ring surrounding the neck part of the chamber wall is disclosed. The chamber wall consists of at least 85% by weight of a base material containing polyacetal in a mixture with up to 20% by weight of polytetrafluoroethylene having additives consisting of one or more of calcium oxide, aluminum oxide, aluminum and carbon. The conductive coating on the inner surface of the chamber wall consists of a material containing one or more elements having an atomic number greater than 8.

    Abstract translation: 一种电离室，用​​于测量具有等效于空气，纸巾或水和颈部的电磁辐射吸收特征并且在所有侧面上被封闭的电磁辐射吸收特征的室壁的空气补偿孔; 公开了一种通过在室壁的内表面上的导电涂层形成的外部电极，内部电极和围绕室壁的颈部的导电环。 室壁由至少85重量％的含有聚缩醛的基础材料与至多20重量％的具有由氧化钙，氧化铝，铝和碳中的一种或多种组成的添加剂的聚四氟乙烯的混合物组成。 室壁内表面上的导电涂层由含有一个或多个原子序数大于8的元素的材料构成。

    Radon control system
    6.
    发明授权
    Radon control system 失效
    氡控制系统

    公开(公告)号：US5053624A

    公开(公告)日：1991-10-01

    申请号：US553837

    申请日：1990-07-18

    Applicant: Stanley Kronenberg

    Inventor： Stanley Kronenberg

    IPC: G01T1/185 ,  H01J47/02

    CPC classification number: G01T1/185 ,  H01J47/022 ,  Y10S250/02

    Abstract: A detector of ambient radon concentrations in real time comprising a housing, at least three conductive elements one of which being grounded, another being biased with respect to the other conductive elements, and at least one other conductive element being connected in series with an amplifier circuit and a counter circuit, respectively. In operation, when an energized alpha particle enters the housing, it ionizes air molecules, thus producing ions which are collected by the conductive element by virtue of the potential between that element and the other elements. The voltage pulse is amplified by the amplifier circuit and then counted.

    Abstract translation: 包括壳体的环境氡浓度检测器，至少三个导电元件，其中一个接地，另一个导电元件相对于其它导电元件偏置，并且至少一个其它导电元件与放大器电路串联连接 和一个计数器电路。 在操作中，当通电的α粒子进入壳体时，其离子化空气分子，从而产生由该元件和其它元件之间的电势由导电元件收集的离子。 电压脉冲由放大器电路放大，然后计数。

    Ionization detector calibration
    10.
    发明授权
    Ionization detector calibration 失效
    电离检测器校准

    公开(公告)号：US4327289A

    公开(公告)日：1982-04-27

    申请号：US972661

    申请日：1978-12-26

    Applicant: Elias E. Solomon

    Inventor： Elias E. Solomon

    IPC: G01T1/185 ,  G01N33/00 ,  G08B17/113 ,  H01J47/02 ,  G01D18/00

    CPC classification number: G01N33/0006 ,  G08B17/113 ,  H01J47/022

    Abstract: A technique for calibrating an ionization detector by simulating the presence of particles of combustion. In one embodiment a test probe is employed extending into the chamber. The probe may be partially conductive and partially non-conductive and be either rotatable or able to be withdrawn or partially withdrawn to vary ionization current. In another embodiment the source may be moveable to alter the ionization current. In still another embodiment there is provided the temporary distortion of one electrode to change the geometry of the chamber to thereby effect ionization.

    Abstract translation: 通过模拟燃烧颗粒的存在来校准电离检测器的技术。 在一个实施例中，使用延伸进入室的测试探针。 探针可以是部分导电的并且部分不导电，并且可以是可旋转的或能够被抽出或部分抽出以改变电离电流。 在另一个实施例中，源可以是可移动的以改变电离电流。 在另一个实施例中，提供了一个电极的暂时变形以改变腔室的几何形状从而实现电离。

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