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1. 发明授权

US4251724A Method and apparatus for determination of temperature, neutron absorption cross section and neutron moderating power 失效
标题翻译：测定温度，中子吸收截面和中子调节力的方法和装置
公开(公告)号：US4251724A
公开(公告)日：1981-02-17
申请号：US871759
申请日：1978-01-23
申请人： Nicholas Vagelatos , Donald K. Steinman , Joseph John , Jack C. Young
发明人： Nicholas Vagelatos , Donald K. Steinman , Joseph John , Jack C. Young
IPC分类号： G01K11/30 , G01V5/10 , G01V5/00 , B01D59/44
CPC分类号： G01V5/107 , G01K11/30
摘要： A nuclear method and apparatus determines the temperature of a medium by injecting fast neutrons into the medium and detecting returning slow neutrons in three first energy ranges by producing three respective detection signals. The detection signals are combined to produce three derived indicia each systematically related to the population of slow neutrons returning from the medium in a respective one of three second energy ranges, specifically exclusively epithermal neutrons, exclusively substantially all thermal neutrons and exclusively a portion of the thermal neutron spectrum. The derived indicia are compared with calibration indicia similarly systematically related to the population of slow neutrons in the same three second energy ranges returning from similarly irradiated calibration media for which the relationships temperature, neutron absorption cross section and neutron moderating power to such calibration indicia are known. The comparison indicates the temperature at which the calibration indicia correspond to the derived indicia and consequently the temperature of the medium. The neutron absorption cross section and moderating power of the medium can be identified at the same time.
摘要翻译：核方法和装置通过将快中子注入介质来确定介质的温度，并通过产生三个相应的检测信号来检测三个第一能量范围内的返回慢中子。检测信号被组合以产生三个导出的标记，每个系统地与三个第二能量范围中的相应一个中的介质返回的缓慢中子的群体系统地相关，特别是专门的超热中子，仅仅是基本上所有的热中子，并且仅仅是一部分热中子中子谱。将衍生标记与在类似辐照的校准介质返回的相同的三个第二能量范围内与慢中子群体系统地相关系统地校正标记进行比较，其中已知关系温度，中子吸收截面和中子调节能力已经被认识到。比较表明校准标记对应于导出标记的温度，因此与培养基的温度相对应。可以同时识别介质的中子吸收截面和调节力。

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