| 摘要 |
PURPOSE:To detect the dosage of radiation with high accuracy by dividing a radiation adsorbing body which adsorbs sampling gas to length with which radiation emitted from inside does not attenuate and detecting the radiation from them. CONSTITUTION:A column-shaped cartridge 34 is arranged as the radiation adsorbing body at a measurement place for radiation contamination concentration and the sampling gas is adsorbed. When the adsorption is finished, the cartridge 34 is placed on a cartridge holder 27 and arranged in the hole 23 of a turntable 20. Then a cutter mechanism 24 after the height of a blade 26 is adjusted with the control signal of a data processor 31 divides the cartridge 34 to the thickness with which the radiation does not attenuate and divided parts are held successively in next holes 23 as the turntable 20 rotates. The dosages of radiation radiate from those parts are detected by a radiation detector 28 facing the holder 27 and mechanism 24 about the center of rotation of the turntable 20 and counted by a measuring instrument 29.
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