(a) Describe the nuclear processes of alpha and beta decay, and describe what parameter is increasing...

(a) Describe the nuclear processes of alpha and beta decay, and describe what parameter is increasing in the nucleus as a result of these decays. [3] (b) Where a stationary neutron combines with a proton to form a deuteron, a gamma ray of energy 2.2233 MeV is emitted. The masses of the proton and the deuteron are 1.007276467 u and 2.013553212 u, respectively. Determine the mass of the neutron, stating any laws used and defining variables. [4] (c) Uranium ore mined today contains 0.72% of fissionable 235U, with the remainder being 238U. For use in a reactor, the ore needs to be refined to increase the fraction of 235U to 3%. How many years ago would natural uranium ore have been a practical reactor fuel, with a 235U/238U ratio of 3.0%? [3] Take 235U to have a half-life of 7.0 × 108 y and 238U to have a half-life of 4.5 × 109 y

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