electron spin resonance

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Related to electron resonance absorption: Electron spin resonance spectroscopy

electron spin resonance

n. Abbr. ESR
A spectroscopic technique, similar to nuclear magnetic resonance, used to detect atoms having orbitals containing unpaired electrons, as found in free radicals. The molecules are exposed to high-frequency microwave radiation, causing the electrons in unpaired orbitals to resonate between the two available spin states of that orbital and to release distinct patterns of radiation. Also called electron paramagnetic resonance.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

electron spin resonance

n
(General Physics) a technique for investigating paramagnetic substances by subjecting them to high-frequency radiation in a strong magnetic field. Changes in the spin of unpaired electrons cause radiation to be absorbed at certain frequencies. Abbreviation: ESR See also nuclear magnetic resonance
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Noun1.electron spin resonance - microwave spectroscopy in which there is resonant absorption of radiation by a paramagnet
microwave spectroscopy - the use of spectroscopy to study atomic or molecular resonances in the microwave spectrum
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