Mössbauer effect

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Möss·bau·er effect

 (mœs′bou′ər, môs′-, mŏs′-)
The recoilless emission of gamma rays by radioactive nuclei of crystalline solids, and the subsequent absorption of the emitted rays by other nuclei.

[After Rudolf Ludwig Mössbauer (1929-2011), German physicist.]

Mössbauer effect

(ˈmɒsˌbaʊə; German ˈmœsbauər)
(General Physics) physics the phenomenon in which an atomic nucleus in a crystal of certain substances emits a gamma ray without any recoil to the atom. The study of the emitted gamma rays (Mössbauer spectroscopy) is used to determine the energy levels in a nucleus, the structure of molecules, etc
[C20: named after Rudolf Ludwig Mössbauer (1929–2011), German physicist]