Wilbert Smith Archives Files Box 1131 19 1131-19-p216

Document Text (OCR)

+ concentration of a partic tope in the original sample For each radionuclide th radioactivity induc the number of nuc stable isotope, the numb that are available to inter: nuclei (the neutron flux) and the bility that a neutron a target nucleus. enters the sample doe: anucleus, of course; the spacing betwe the nuclei is so large compared with the size of the nuclei and the size neutrons that most of the neu! pass right through the sample. Only when a neutron comes fairly close to a nucleus...