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19 April, 23:18

What is the mass loss of the nucleus, in u, upon emission of this gamma ray? - g?

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  1. 20 April, 01:32
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    Suppose that the energy of the emitted gamma ray photon is given the symbol "e" in units of Kev

    Now, we use Einstein's equation (E = mc²) where c is the speed of light (3 x 10^8 m/sec)

    substituting in this equation, we find that:

    e = mass x c²

    mass = e / c²

    Now to get the corresponding value in atomic mass unit:

    1 eV/c² = 1 / (931.46 * 10^6) amu

    Therefore,

    The mass in amu = e x 1 / (931.46 * 10^6) atomic mass unit
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