DEVICE FOR REDUCING THE FLUX OF RADIATION, PARTICULARLY GAMMA RADIATION, AND RADIATION SENSING ASSEMBLY USING SAME

摘要

A device for reducing the flux of radiation, particularly gamma radiation, and a radiation sensing assembly using same, are disclosed. Said device includes a radiation attenuation element (12, 14) provided with an opening extending from the edge to the centre thereof, and a means for rotating said element about an axis passing through the centre thereof. When said axis coincides with the axis (X) of the solid sensing angle, the element is arranged so that all the radiation included within said solid angle passes through the element and the opening therein, and when the element is rotated, the whole of the solid sensing angle is scanned during one rotation of the element. The sensing assembly includes said device (10), a radiation sensor (4) and a radiation collimator (8).