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    • 1. 发明公开
    • NEUTRON SPECTROMETER
    • 中子光谱仪
    • EP2705386A1
    • 2014-03-12
    • EP12720561.5
    • 2012-05-02
    • Symetrica Limited
    • RAMSDEN, DavidGILES, Calvin
    • G01T3/06G01V5/00
    • G01T3/001G01T3/06G01V5/0091
    • A neutron spectrometer is described. The spectrometer includes a first conversion screen (8) comprising a neutron absorbing material and a phosphor material, a first wavelength-shifting light-guide (14) arranged to receive photons from the phosphor material of the first conversion screen and generate wavelength-shifted photons therefrom and a first photodetector (22)optically coupled to the first wavelength-shifting light-guide and arranged to detect the wave- length-shifted photons. The spectrometer further includes a second conversion screen (12) comprising a neutron absorbing material and a phosphor material, a second wavelength-shifting light-guide (16) arranged to receive photons from the phosphor material of the second conversion screen and generate wavelength-shifted photons there- from, and a second photodetector (24) optically coupled to the second wavelength-shifting light-guide and arranged to detect the wave- length-shifted photons. A neutron moderator material is arranged between the first and second conversion screens to moderate neutrons.
    • 描述了中子分光计。 该分光计包括:第一转换屏幕(8),其包括中子吸收材料和磷光体材料;第一波长偏移光导(14),其被布置为接收来自第一转换屏幕的磷光体材料的光子并产生波长偏移光子 以及第一光电检测器(22),其光学地耦合到第一波长偏移光导并且被布置为检测波长偏移的光子。 该光谱仪还包括包含中子吸收材料和磷光体材料的第二转换屏幕(12),第二波长偏移光导(16),布置成接收来自第二转换屏幕的磷光体材料的光子并产生波长偏移 以及第二光电检测器(24),其光学耦合到第二波长偏移光导并且被布置为检测波长偏移的光子。 中子慢化剂材料被布置在第一和第二转换屏幕之间以调节中子。
    • 2. 发明公开
    • RADIATION DETECTOR
    • 辐射探测器
    • EP2593813A2
    • 2013-05-22
    • EP11730405.5
    • 2011-06-30
    • Symetrica Limited
    • RAMSDEN, DavidGILES, Calvin
    • G01T3/06
    • G01T3/06G01T1/203
    • A radiation detector for neutrons and gamma-rays is described. The detector includes a conversion screen (4a) comprising a mixture of a neutron absorbing material, e.g. containing
      6 Li, and a phosphorescent material, e.g. ZnS(Ag) and a wavelength-shifting light- guide (8) arranged to receive photons emitted from the phosphorescent material and generate wavelength-shifted photons therefrom. The wavelength-shifting light-guide is doped so as to form a gamma-ray scintillator material operable to generate scintillation photons in response to a gamma-ray detection event therein. A photodetector (10) is optically coupled to the wavelength-shifting light-guide and arranged to detect the wavelength-shifted photons and the scintillation photons. Signals from the photodetector are processed to distinguish neutron detection events from gamma ray detection events.
    • 描述了用于中子和伽马射线的辐射探测器。 该检测器包括转换屏幕(4a),该转换屏幕包括中子吸收材料(例如, 含有6Li,以及磷光材料,例如, ZnS(Ag)和波长偏移光导(8),其被布置为接收从磷光材料发射的光子并从其产生波长偏移的光子。 波长转换光导被掺杂以形成伽马射线闪烁体材料,其可操作以响应于其中的伽马射线检测事件而产生闪烁光子。 光检测器(10)光耦合到波长偏移光导,并且被布置为检测波长偏移光子和闪烁光子。 处理来自光电探测器的信号以将中子探测事件与伽马射线探测事件区分开来。