PROBLEM TO BE SOLVED: To provide a radiation detector capable of suppressing leakage of a password even when the password is provided in a housing.;SOLUTION: The radiation detector according to the embodiment includes a case, a detection unit provided inside the case for detecting radiation directly or in cooperation with a scintillator, a recess opened in the outer surface of the case, and a password provided inside the recess.;SELECTED DRAWING: Figure 6;COPYRIGHT: (C)2019,JPO&INPIT
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