Preliminary assessment of dose distribution on the spatial micro level for internal exposure of alveolar epithelium of rats by 56Mn

Special dosimetry study of experimental rats exposure by sprayed Mn-56 powder was conducted during experiments in order to study internal irradiation effects. All experiments were performed in Kurchatov's reactor complex Baikal-1 (Kurchatov city, East-Kazakhstan region) after neutron activation of stable Mn powder. This study was performed by group of scientists from Japan, Kazakhstan, and Russian Federation. The results of estimated doses in lungs alveolar epithelium of rats are shown in this paper. Absorbed dose on the surface of epitelium is equal to 160 Gy and absorbed dose in the bottom of epithelium for minimal thickness of epithelium cells is 8.9 Gy and for maximal thickness of epithelium cells equal to 0.4 Gy.