(6) Suppose an atom of iron at rest emits an X-ray photon of energy 64 keV. Calculate the recoil momentum and kinetic energy for the atom. (You should look up mass for iron, and think about whether you need to use the relativistic kinetic energy for the atom or if the classical expression is good enough.)

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(6) Suppose an atom of iron at rest emits an X-ray photon of energy 64 keV. Calculate the recoil
momentum and kinetic energy for the atom. (You should look up mass for iron, and think
about whether you need to use the relativistic kinetic energy for the atom or if the classical
expression is good enough.)
Transcribed Image Text:(6) Suppose an atom of iron at rest emits an X-ray photon of energy 64 keV. Calculate the recoil momentum and kinetic energy for the atom. (You should look up mass for iron, and think about whether you need to use the relativistic kinetic energy for the atom or if the classical expression is good enough.)
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