Many radioisotopes have important industrial, medical, and research applications. One of these is Cobalt-60, which has a half-life of 5.20 years and decays by the emission of a beta particle (energy 0.31 MeV) and two gamma photons (energies 1.17 MeV and 1.33 MeV). A scientist wishes to prepare a Cobalt-60 sealed source that will have an activity of at least 10 Ci after 30 months of use. a. What minimum initial mass of Cobalt-60 is required? b. At what rate will the source emit energy after 30 months?
Many radioisotopes have important industrial, medical, and research applications. One of these is Cobalt-60, which has a half-life of 5.20 years and decays by the emission of a beta particle (energy 0.31 MeV) and two gamma photons (energies 1.17 MeV and 1.33 MeV). A scientist wishes to prepare a Cobalt-60 sealed source that will have an activity of at least 10 Ci after 30 months of use. a. What minimum initial mass of Cobalt-60 is required? b. At what rate will the source emit energy after 30 months?
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Many radioisotopes have important industrial, medical, and research
applications. One of these is Cobalt-60, which has a half-life of 5.20 years and
decays by the emission of a beta particle (energy 0.31 MeV) and two gamma
photons (energies 1.17 MeV and 1.33 MeV). A scientist wishes to prepare a
Cobalt-60 sealed source that will have an activity of at least 10 Ci after 30
months of use.
a. What minimum initial mass of Cobalt-60 is required?
b. At what rate will the source emit energy after 30 months?
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