In the figure an early proposal for a hydrogen bomb has been shown. The fusion fuel is deuterium,. The high temperature and particle density for fusion are provided by an atomic bomb “trigger,” which involves a or fission fusion that is arranged to impress an imploding, comprehensive shock wave on the deuterium. The operative fusion reaction is

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We have to calculate (a) the for the fusion reaction; (b) we have to calculate the rating of the fusion part of the bomb if it contains 500 kg of deuterium, 30.0% of which undergoes fusion. Needed atomic masses are

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The Q for the fusion reaction

will be

Number of atoms in 500 kg of deuterium will be

It is given that the design of the hydrogen bomb is such as allows 30.0% of deuterium to undergo fusion. As in each fusion reaction 5 nuclei of fuse, the total amount of energy that will be released in the bomb will be

As one megaton of TNT is equivalent to , the rating of the bomb in unit of megaton of TNT will be