| 摘要 |
PROBLEM TO BE SOLVED: To provide a calibration device capable of optionally and quickly performing works, without having to exchange calibration radiation source by reducing the distance between the calibration radiation source and a device for measuring dose to be calibrated, in the device for calibrating the device for measuring dose, such as radiation. SOLUTION: In place of a system performing attenuation of radiation from the calibration radiation source by the atmosphere, one among a plurality of mobile filters having different thicknesses or a materials, formed of radiation shielding metals, is used selectively for a single calibration radiation source. COPYRIGHT: (C)2007,JPO&INPIT
|
