Because of the change in photon energy, it is an inelastic scattering process.

Adjustments for photon energy or dose-rate and fractionation have not been made.

As a result, every atom emits a different set of photon energies.

There are, however, two practical limiting factors to photon energy.

If so, is there a minimum photon energy observed that suggests a neutrino rest mass?

The photon energy is transferred to matter in a two-step process.

If the photon energy does not match the atom, it is less likely to be absorbed.

If the photon energy is too low, the electron is unable to escape the material.

Our space craft has run out of photon energy on your planet.

Then, the relationship between radiated power and photon energy is shown in the graph on the rightside.