| 摘要 |
<p>PURPOSE:To evaluate the distribution of radiation dose rate in a working space conveniently with high accuracy by estimating the distribution of radiation sources highly accurately from measurements of radiation fewer in number than the radiation source distribution units, i.e., small region, through the use of known information concerning to the distribution of radiation source in addition to measurements of radiation. CONSTITUTION:A radiation dose rate, measurable by means of an input, a fixed type, and a mechanical scanning radiation measuring equipment, is employed as a radiation measurement. The radiation dose rate 1 is input, along with measuring position information thereof 2, from a radiation dose rate measurement input unit to a radiation source distribution estimating unit. When a detector has directivity, directivity performance and the direction of the detector are also input. The radiation distribution estimating unit determines the radiation distribution 3 in a working space based on the information of radiation dose rate measurements and outputs the radiation source distribution 3 to a radiation dose rate distribution generating unit. The radiation dose rate distribution generating unit determines a radiation dose rate at an arbitrary spatial position which is output along with the position thereof. An output unit comprising a CRT and a hard copy displays the radiation dose rate distribution visually on the CRT and prints the distribution on a paper, as required.</p> |
