| 摘要 |
PURPOSE:To enable a handy measurement of exposure dose along a simple element structure by photoelectrically reading stimulative emission generated with irradiation of an excited light after exposure employing a dosimeter element comprising a stimulative fluorescent substance. CONSTITUTION:A sheet-shaped stimulative fluorescent sheet 1 is sealed into a light shielding bag 2. The light shielding bag 2 is made up of a polyethylene film, for instance and sealed up in the perimeter thereof. In a black box 10, the element 11 of stimulative fluorescent substance is placed on a base 12 released from the light shielding and an excited light 14 is irradiated thereon from a specified excitation light source 13. A stimulative emission 15 is focused on a photoelectric detector 18 without transmitting a condenser lens 16 and the excited light 14 and detected photoelectrically. The output of the detector 18 is amplified with an amplification circuit 19 and inputted into a display 20 which indicates a value corresponding to the quantity of light detected. The quantity of light of the stimulative emission detected is the function of the radiation energy accumulated in the element 11 exposured thereto and hence, the displayed value on the display 20 represents an exposure dose. |
