Spontaneous emission

During a spontaneous emission, a Atome in an excited state $n\text{'}$ can be de-energized towards a state $n$, even in the absence of Rayonnement. The radiation is emitted in a random direction, and its frequency is equal to the Fréquence of Bohr $\backslash \; omega\_\; \{\}$. One can interpret this process like the emission of a Photon of energy $\backslash \; hbar\; \backslash \; omega\_\; \{\}$ in a random direction.

See too

stimulated Emission

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