RADIOACTIVE MATERIAL DIFFUSION PREDICTION DEVICE, RADIOACTIVE MATERIAL DIFFUSION PREDICTION METHOD, AND RADIOACTIVE MATERIAL DIFFUSION PREDICTION PROGRAM

• Main Authors: SATO AKIYOSHI, ISHIOKA MASATO, OBA RYOJI, YONEDA JIRO
• Format: Patent
• Language: English; Japanese
• Published: 15.01.2015
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; METEOROLOGY; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To enable the prediction of the state of radioactive material with higher accuracy.SOLUTION: There is provided a radioactive material diffusion prediction device predicting a diffusion state of radioactive material emitted into the air from a diffusion source, and including an acquisition unit that acquires information on the dose observed at observation points, and a calculation unit that analyzes the acquired information. The calculation unit separately identifies and extracts at least one of or both the radiation dose rate resulting from cloud shine and the radioactive dose rate resulting from ground shine on the basis of the change over time of the observed dose at the observation points. 【課題】放射性物質の状況をより高い精度で予測することができること。【解決手段】拡散源から大気中に放出された放射性物質の拡散状況を予測する放射性物質拡散予測装置であって、観測点で観測した線量の情報を取得する取得部と、取得した情報を解析する演算部と、を有し、演算部は、観測点の前記観測線量の時間変化に基づいて、クラウドシャインに起因する放射線量率及びグランドシャインに起因する放射線量率のうち少なくとも一方を、または同時に分離識別し抽出する。【選択図】図２