The use of neutron-induced autoradiography to determine the range of fission fragments in tissue and the plutonium burden of mouse liver

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Abstract
Quantitative techniques for neutron-induced autoradiography (NIAR) of plutonium in soft biological tissues are used to determine an equivalent fission fragment range in mouse liver tissue of 47 μm thickness. An evaluation of the range variation of fission fragments in tissue shows that measurement on a tissue section is representative of the whole organ. Evidence is obtained of the even distribution of plutonium throughout the liver parenchymal tissue.