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.

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
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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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