All Problems

Radioactivity

Problem 6.245

A free stationary Ir 191^{191} nucleus with excitation energy E=129keVE=129 \mathrm{keV} passes to the ground state, emitting a gamma quantum. Calculate the fractional change of gamma quanta energy due to recoil of the nucleus.

Reveal Answer
Δε/ε=E/2mc2=3.6⋅10−7, where m is the mass of the \Delta \varepsilon / \varepsilon=E / 2 m c^{2}=3.6 \cdot 10^{-7} \text {, where } m \text { is the mass of the }
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