Calculate the Q value and threshold energy for the 20Ne( α, 12C)12C reaction. What will be the sum of the kinetic energies of the 12C nuclei if the alpha particle initially has 45 MeV of kinetic energy in the lab?
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Calculate the Q value and threshold energy for the 20Ne( α, 12C)12C reaction. What will be the sum of the kinetic energies of the 12C nuclei if the alpha particle initially has 45 MeV of kinetic energy in the lab?
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- An unstable isotope of cobalt, 60Co, has one more neutron in its nucleus than the stable 59Co and is a beta emitter with a half-life of 5.30 years. This isotope is widely used in medicine. A certain radiation source in a hospital contains 4.20×10−2g of 60Co A) What is the decay constant for that isotope? Express your answer with the appropriate units. B) How many atoms are in the source? C) How many decays occur per second? Express your answer as a number of decays per second. D) What is the activity of the source, in curies? Express your answer in curies.The stable nuclei 36Ar and 76Se both differ by 20 in atomic number from 56Fe, which lies at the peak of the binding energy per nucleon curve. Find B/A for both 36Ar and 76Se. Which one has the larger B/A? Why is this to be expected?Thorium 22890Th produces a daughter nucleus that is radioactive. The daughter, in turn, produces its own radioactive daughter, and so on. This process continues until bismuth 21883Bi is reached. What are (a) the total number Nα of α particles and (b) the total number Nβ of β- particles that are generated in this series of radioactive decays?
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