Tritium radioactivity measuring system
    2.
    发明授权
    Tritium radioactivity measuring system 失效
    氚放射性测量系统

    公开(公告)号:US4755471A

    公开(公告)日:1988-07-05

    申请号:US884155

    申请日:1986-09-05

    CPC分类号: G01N31/00

    摘要: A continuous tritium radioactivity measuring system is disclosed, in which a sample gas containing tritium is mixed with hydrogen gas, water vapor and lower hydrocarbon gases with the assistance of a catalyst for causing an isotope exchange reaction between the tritium contained in the sample gas and hydrogen. The resultant tritium gas and lower hydrocarbons containing tritium are removed from the remaining hydrogen water, and radioactivity detection is performed thereon.

    摘要翻译: 公开了一种连续的氚放射性测量系统,其中含有氚的样品气体与氢气,水蒸气和低级烃气体在催化剂的帮助下与样品气体中所含的氚和氢气之间的同位素交换反应混合 。 从剩余的氢水中除去得到的氚气体和含有氚的低级烃,并进行放射性检测。

    Liquid scintillator solution
    3.
    发明授权
    Liquid scintillator solution 失效
    液体闪烁体溶液

    公开(公告)号:US4271035A

    公开(公告)日:1981-06-02

    申请号:US94994

    申请日:1979-11-16

    IPC分类号: C09K11/06 G01T1/204

    CPC分类号: G01T1/2042 C09K11/06

    摘要: A liquid scintillator solution which consists essentially of a polyalkylene glycol derivative of the formula: ##STR1## wherein R.sup.1 to R.sup.5 are each a hydrogen atom, a straight chain or branched chain alkyl group having 1 to 10 carbon atoms or a cyclohexyl group, R.sup.6 and R.sup.7 are each a hydrogen atom or a methyl group provided that both R.sup.6 and R.sup.7 are not methyl groups, m is 0 or 1 and n is a value between 2 and 15; and a scintillator.

    摘要翻译: 一种液体闪烁体溶液,其基本上由以下结构式的聚亚烷基二醇衍生物组成:其中R1至R5各自为氢原子,具有1-10个碳原子的直链或支链烷基或环己基,R6和 R7各自为氢原子或甲基,条件是R6和R7都不是甲基,m是0或1,n是2和15之间的值; 和闪烁体。

    Method of compensating for quenching effect of substance contained in a
sample gas the radioactivity of which is to be measured by a
radioactivity detector and apparatus for performing the same
    4.
    发明授权
    Method of compensating for quenching effect of substance contained in a sample gas the radioactivity of which is to be measured by a radioactivity detector and apparatus for performing the same 失效
    补偿样品气体中所含物质的淬灭效应的方法,其放射性由放射性检测器和用于进行该放射性检测的装置

    公开(公告)号:US4027163A

    公开(公告)日:1977-05-31

    申请号:US541250

    申请日:1975-01-15

    CPC分类号: G01T7/02

    摘要: A first and a second radioactivity detectors are used in series or in parallel which have substantially the same constructive features and the second radioactivity detector includes a fixed standard radioactive source therein. Sample gases each having a common radioactivity and having a different quenching effect are passed through the two radioactivity detectors sequentially to measure the effective radioactivities thereof to thereby obtain counting efficiencies of the two radioactivity detectors. A correction curve is drawn by putting the counting efficiency of the first radioactive detector along one axis of an orthogonal coordinates and the counting efficiency of the second radioactivity detector along the other axis of the coordinates. An unknown sample is treated in the same manner as the above to obtain the counting efficiency of the second detector for the unknown sample and a corresponding counting efficiency of the first radioactivity detector is obtained from the correction curve by the last counting efficiency of the second radioactivity detector. The quenching effect of the unknown sample is compensated for by using the corresponding counting efficiency of the first radioactivity detector.

    摘要翻译: 串联或并联使用第一和第二放射性检测器,其具有基本上相同的结构特征,并且第二放射性检测器在其中包括固定的标准放射源。 各具有共同放射性并具有不同淬灭效果的样品气体依次通过两个放射性检测器以测量其有效放射活性,从而获得两个放射性检测器的计数效率。 通过将第一放射性检测器的计数效率沿着正交坐标的一个轴和第二放射性检测器的坐标的另一个轴的计数效率来绘制校正曲线。 以与上述相同的方式处理未知样品以获得未知样品的第二检测器的计数效率,并且通过第二放射性的最后计数效率从校正曲线获得第一放射性检测器的相应计数效率 探测器。 通过使用第一放射性检测器的相应计数效率来补偿未知样品的淬灭效应。