bound–bound transition

'bound–bound transition' can also refer to...


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A change to the energy of an electron within an atom, or more rarely within a molecule, in which the electron remains attached (bound) to the atom or molecule both before and after the change. When the energy is increased, a photon is absorbed; when the energy is reduced, a photon is emitted. Bound–bound transitions produce the emission and absorption lines found in stellar spectra.

Subjects: Astronomy and Astrophysics.

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