Every source I can find right now just says something like 'energy/ heat is released by nuclear fission' but I can't find a description of the specific mechanism.
I know that the energy 'conversion' so to speak is from 'nuclear' [in the mother nucleus] to 'thermal' [in the coolant (water)], but I'm looking for an understanding of what's happening on a fundamental level.
I know that the daughter nuclei and free neutrons will have kinetic energy. Is this then transferred to the water via atomic collisions?
Do the gamma rays help to heat the water? If so, how?