| 摘要 |
Radiation made to enter an entire envelope formed of lead or copper, which is included in a radiation detector, results in generating neutrons. Then, the neutrons enter an NaI (Tl) crystal, a CsI crystal, a BiGeO crystal, a BaF2 crystal, a GSO (Gd2SiO5) crystal or a GdO crystal, forming a scintillator portion of the radiation detector, and as a result, gamma rays are generated due to a neutron capture reaction. The energy of the gamma rays is measured, thereby detecting the nonuniformity of sensitivity of the scintillator portion of the radiation detector.
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