spontaneous emission

https://doi.org/10.1351/goldbook.S05886
That mode of emission which occurs even in the absence of a perturbing external electromagnetic field. The transition between states, n and m, is governed by the einstein coefficient of spontaneous emission, Anm.
See also: stimulated emission
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2277 [Terms] [Paper]
Citation: 'spontaneous emission' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.S05886 RIS BibTex EndNote
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