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14 November, 19:42

An 8-MeV neutron is inelastically scattered from a barium nucleus. What is the average energy of the emergent inelastic neutrons?

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  1. 14 November, 21:51
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    7.45 Mev

    Explanation:

    in this case we need to considerated the following formula

    alpha = E/Eo

    where:

    alpha = (A - 1) square / (A + 1) square

    and A is the mass number of nucleus, for this case the Ba is 56

    so we replace the values

    alpha = (56 - 1) square / (56 + 1) square

    alpha = 55²/57²

    E = 8*55*55/57*57

    E = 7.45 Mev
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