decoupling

verb

1. (form-of, gerund, participle, present)present participle and gerund of decouple

noun

1. (countable, uncountable)The act or process by which something is decoupled.
2. (countable, uncountable)The act or process by which something is decoupled.
3. (countable, uncountable)The emission of photons during Recombination.

   “Directly combining in a low energy state (ground state) is less efficient, so these hydrogen atoms generally form with the electrons still in a high-energy state, and once combined, the electrons quickly release energy in the form of one or more photons as they transition to a low energy state. This release of photons is known as photon decoupling.”