RADIATION DETECTION ELEMENT AND SURFACE CONTAMINATION MONITOR

摘要

Disclosed are a semiconductor radiation detection element and a surface contamination monitor, which are capable of easily conducting the relocation to a place where an inspection should be conducted, and maintaining radiation detection capability over a long period. A hand-foot-cloth monitor detects the radiation irradiated from radioactive substances adhered to the surfaces of the hands and feet and the surfaces of clothes with a radiation detection element (10). The radiation detection element (10) is provided with a P-layer (112) (P-type semiconductor layer) joined to an N-type silicon substrate (111) (N-type semiconductor substrate), a detection-surface-side electrode (13) (first electrode) formed on the upper surface of the P-layer (112), a circuit-board-side electrode (12) (second electrode) formed on the lower surface of the N-type silicon substrate (111), and a silicon nitride film (14) formed on the element surface including the detection-surface-side electrode (13).