isomer shift

in Mössbauer spectroscopy

Measure of the energy difference between the source ( $E s$ ) and the absorber( $E a$ ) transition. The measured Doppler velocity shift, $δ$ , is related to the energy difference by

$E a − E s = δ E γ c$

where $E γ$ is the Mössbauer gamma energy and $c$ is the speed of light in vacuum.

Source:

PAC, 1976, 45, 211 (Nomenclature and Conventions for Reporting Mossbauer Spectroscopic Data) on page 214

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Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.

Last update: 2014-02-24; version: 2.3.3.

DOI of this term: https://doi.org/10.1351/goldbook.I03296.

Original PDF version: http://www.iupac.org/goldbook/I03296.pdf. The PDF version is out of date and is provided for reference purposes only. For some entries, the PDF version may be unavailable.

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