recoil-free fraction

in Mössbauer spectrometry
https://doi.org/10.1351/goldbook.R05201
The fraction of all Mössbauer gamma rays of the transition which are emitted or absorbed without significant recoil energy loss.
Source:
PAC, 1976, 45, 211. (Nomenclature and Conventions for Reporting Mössbauer Spectroscopic Data) on page 214 [Terms] [Paper]
Citation: 'recoil-free fraction' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.R05201 RIS BibTex EndNote
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Last revised: February 24, 2014