Recombination cooling of ionized hydrogen
= Recombination cooling of ionized hydrogen
<Radiative recombination> removes the <kinetic energy> of captured <electrons> from a plasma. The thermal cooling per event is not the entire emitted <photon> energy: <binding energy> had been stored as <ionization energy>. If recombination is the only cooling and <ionization> is balanced, the mean removed <kinetic energy> equals the mean <photoelectron> heating energy.