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    Radiation detector, an apparatus for use in planar beam radiography and a method for detecting ionizing radiation
    76.
    发明授权
    Radiation detector, an apparatus for use in planar beam radiography and a method for detecting ionizing radiation 失效
    辐射检测器，用于平面射线射线照相术的设备和用于检测电离辐射的方法

    公开(公告)号：US06414317B1

    公开(公告)日：2002-07-02

    申请号：US09444569

    申请日：1999-11-19

    Applicant: Tom Francke ,  Vladimir Peskov

    Inventor： Tom Francke ,  Vladimir Peskov

    IPC: H01J4700

    CPC classification number: H01J47/04

    Abstract: A detector (64) for detection of ionizing radiation, an apparatus for use in planar beam radiography, comprising such a detector, and a method for detecting ionizing radiation. The detector comprises: a chamber filled with an ionizable gas; first and second electrode arrangements (2, 1, 18, 19) provided in said chamber with a space between them, said space including a conversion volume (13); means for electron avalanche amplification (17) arranged in said chamber; and, at least one arrangement of read-out elements (15) for detection of electron avalanches. A radiation entrance is provided so that radiation enters the conversion volume between the first and second electrode arrangements. In order to achieve well-defined avalanches the means for electron avalanche amplification includes a plurality of avalanche regions.

    Abstract translation: 用于检测电离辐射的检测器（64），用于平面射线照相术的平面射线照相设备的装置，包括这种检测器，以及用于检测电离辐射的方法。 检测器包括：填充有可电离气体的室; 设置在所述腔室中的第一和第二电极布置（2,1,18,19）之间具有空间，所述空间包括转换体积（13）; 用于设置在所述室中的电子雪崩放大装置（17）的装置; 以及用于检测电子雪崩的读出元件（15）的至少一种布置。 提供辐射入口，使得辐射进入第一和第二电极装置之间的转换体积。 为了实现明确定义的雪崩，用于电子雪崩放大的装置包括多个雪崩区域。

    Ultra-sensitive carbon fiber dosimeter
    77.
    依法登记的发明
    Ultra-sensitive carbon fiber dosimeter 失效
    超灵敏碳纤维剂量计

    公开(公告)号：USH1500H

    公开(公告)日：1995-11-07

    申请号：US167258

    申请日：1993-12-15

    Applicant: Stanley Kronenberg

    Inventor： Stanley Kronenberg

    IPC: G01T1/14 ,  H01J47/04

    CPC classification number: H01J47/04 ,  G01T1/14

    Abstract: A 20 mR (5.16 * 10.sup.-3 C/Kg) full-scale carbon fiber dosimeter that provides a direct reading of low-level Gamma and neutron exposure in real-time. To attain this, the dosimeter utilizes an enlarged ionization chamber that has a cylindrical shape with an inside diameter at least 1 inch (2.54 cm), an outside diameter at least 1.1 inches (2.794 cm), an inside height at least 0.725 inch (1.8415 cm), and an outside at least 1 inch (2.54 cm). Moreover, the inner wall of the dosimeter's ionization chamber is lined with either a predetermined hydrogenous or non-hydrogenous material having different sensitivity to gamma ray and neutron exposure.

    Abstract translation: 一个20 mR（5.16 * 10-3 C / Kg）全尺寸碳纤维剂量计，可以实时提供低级伽玛和中子曝光的直接读数。 为了达到这个目的，剂量计使用一个扩大的电离室，其具有内径至少为1英寸（2.54cm），外径为至少1.1英寸（2.794cm），内部高度至少为0.725英寸（1.8415） cm），外部至少1英寸（2.54cm）。 此外，剂量计的离子化室的内壁衬有对γ射线和中子曝光具有不同灵敏度的预定氢或非氢材料。

    Carbon fiber electrometer for dosimeter
    78.
    发明授权
    Carbon fiber electrometer for dosimeter 失效
    用于剂量计的碳纤维静电计

    公开(公告)号：US3993950A

    公开(公告)日：1976-11-23

    申请号：US584567

    申请日：1975-06-06

    Applicant: Harley V. Piltingsrud

    Inventor： Harley V. Piltingsrud

    IPC: G01R5/32 ,  H01J47/04

    CPC classification number: G01R5/32 ,  H01J47/04

    Abstract: An electrometer for conventional pocket radiation dosimeters is disclosed in which the moving element of the electrometer is a carbon fiber. The fiber is spun from polyacrylonitrile homopolymer yarn and has a diameter of approximately 7 microns before carbonization. The polyacrylonitrile homopolymer fiber is conventionally preoxidized at approximately 270.degree. C before conventional carbonization at approximately 1200.degree. C. The resulting working fiber has a round cross sectional diameter of approximately 4 microns and a modulus of elasticity of approximately 15,000,000 psi. The fiber is mounted in a conventionally loop shaped electrometer frame by crimping the ends of the fiber into tabs on the frame.

    Abstract translation: 公开了用于传统口袋辐射剂量计的静电计，其中静电计的移动元件是碳纤维。 纤维从聚丙烯腈均聚物纱线纺出，并且在碳化之前具有约7微米的直径。 在约1200℃下常规碳化之前，聚丙烯腈均聚物纤维通常在约270℃下预氧化。所得到的加工纤维的圆形横截面直径约为4微米，弹性模量约为15,000,000psi。 纤维通过将纤维的端部压接在框架上的突出部中而安装在常规环形静电计框架中。

    Portable detector for dosimetry of x and gamma radiation
    79.
    发明授权
    Portable detector for dosimetry of x and gamma radiation 失效
    便携式检测器用于X和伽马辐射的量化

    公开(公告)号：US3752985A

    公开(公告)日：1973-08-14

    申请号：US3752985D

    申请日：1970-02-09

    Applicant: COM AL EN ATOMIQUE

    Inventor： BERMAN F ,  COURTAUD P ,  DIOUX C ,  RUFFET P ,  MANIFACIER A ,  RABOEUF A

    IPC: H01J47/04 ,  G01T1/14

    CPC classification number: H01J47/04

    Abstract: In a dosimeter comprising a microscope and a fiber electrometer contained in a thin-walled cylindrical ionization chamber, at least one sleeve can be caused to slide over the exterior of the chamber so as to cover or uncover its thin wall, thereby endowing the dosimeter with a selectable response equivalent to radiation doses absorbed under a protection of different thicknesses of human body tissue, instant measurements being taken as a function of the skin dose by means of a double-scale reticule.

    Abstract translation: 在包含显微镜和包含在薄壁圆柱形电离室中的纤维静电计的剂量计中，可以使至少一个套筒在腔室的外部滑动以覆盖或揭开其薄壁，从而赋予剂量计与 相当于在不同厚度的人体组织的保护下吸收的辐射剂量的可选择的响应，通过双尺度网状作为皮肤剂量的函数来进行即时测量。

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