| 摘要 |
PROBLEM TO BE SOLVED: To provide an extremely simple method, compared to a conventional method, for sufficiently accurately obtaining intensity of punctiform radiation sources in a flat area that is considered to be uniformly contaminated with a radioactive substance, and obtaining an environmental radiation amount map according to the intensity of the punctiform radiation sources.SOLUTION: The present invention includes: using a random number to calculate positions of a plurality of numbers of punctiform radiation sources; assuming an assumption punctiform radiation source intensity S; obtaining, on the basis of the assumption punctiform radiation source intensity S, an assumption environmental radiation dose Iin a specific evaluation point by approximating correlation of a distance and a dose with an exponential function and totalizing radiation doses applied from each of the punctiform radiation sources to the specific evaluation point; actually measuring an actual measurement environmental radiation dose I at the specific evaluation point; obtaining a conversion factor α from the assumption environmental radiation dose Iand the assumption punctiform radiation source intensity S; and calculating a punctiform radiation source intensity S from the actual measurement environmental radiation dose I and the conversion factor α.SELECTED DRAWING: Figure 1 |
