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Alpha emitters tend to be bone seekers that are not

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Unformatted text preview: ha emitters tend to be bone-seekers that are not eliminated from the body once internalized. They will do serious damage to the white-cell proding bone marrow if ingested. 10. A low Z material (such as H in the form of H2O) is needed to moderate (slow down) the neutrons, then absorb them (via n,γ reactions). Lead is not effective in this regard because the energy transfer between Pb and n is not efficient, and Pb isotopes have very small cross sections for n capture....
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