8. The binding energy of tritium (H) and deuteron 2.29 Mev respectively released when 34 & 18.5 Mel f (24) what will be energy 21 fuse to form a stable tHe of binding 28.3 MeV 2 energy 400
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A:
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- 1. Use the semi empirical mass formula to compute: 64 64 i) ii) The mass difference between 29 Cu and 30 Zn. The binding energy of the last neutron in 207Pb.1. The atomic mass of Pb is 207.9766 u. Calculate mass defect and binding energy 2. A radioactive material has a half-life of 8 days. How long will it take for material to be reduced to one-sixteenth (1/16) of its original mass?4) What will be the decay constant for radon with a half-life of 3.82 days?
- 5. What is the energy released in this B+ nuclear reaction Al Mg+e? (The atomic mass of Al is 23.999939 u 13- and that of Mg is 23.985041 u) Mev2. The decay constant, Ai, for the a transition of 243 Am95 () to the various levels of 239NP93 may be estimated from In 1= 48.4 + 2.97 R½ Z¼ - 3.97 Z/T« - 660 o = 0.002la(la+1) where Z is the atomic number of the daughter nucleus, R is the radius of the daughter nucleus in femtometers and approximated by R=1.2XA3, Ta is the kinetic energy of the a - particle in MeV and la is the angular momentum carried by the a- particle. a. Calculate the branching ratio of the 3 transitions. b. Estimate the mean lifetime of the 243Amº5 5- c. The transition from the 239N%93 () to the state proceeds either directly by gamma emission or by gamma emission to the state first or by internal conversion of K-electron, with a conversion coefficient of 2. Use Weisskopf estimates to calculate the lifetime of the 9- excited state.3. Explicitly calculate the binding energy and binding energy per nucleon for ®0 by comparing the mass of the atom to the sum of the masses of the constituent protons, electrons, and neutrons. You may ignore the binding energy of the electrons in the problem. [MeV]