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Development of an estimation method of concentration distribution and release amount of radionuclide discharged to the atmosphere using gamma-ray imaging, 3; Simulation of detected gamma-ray images and construction of response matrices

Furuta, Yoshihiro; Satoh, Daiki  ; Nakayama, Hiromasa  ; Nagai, Haruyasu ; Tanimori, Toru*

In the CLADS subsidy project, we are developing an estimation method of concentration distribution and release amount of radiative nuclide by reverse-analyzing images of gamma-ray emitted by radionuclide discharged into the atmosphere obtained by an Electron Tracking Compton Camera (ETCC). It improves the estimation accuracy of atmospheric dispersion to use the concentration distribution and release amount of radionuclide calculated by this method as input data to the dispersion calculation. We simulated virtual gamma-ray images and response matrices for the development and verification of reverse analysis method. We report on simulation of these virtual gamma-ray images and construction of the response matrices.

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