electron spin resonance


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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
ThesaurusAntonymsRelated WordsSynonymsLegend:
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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References in periodicals archive ?
Nishi, "Study of silicon-silicon dioxide structure by electron spin resonance I," Japanese Journal of Applied Physics, vol.
Dose measured by alanine/ESR Applied dose Relative Relative combined combined Component standard Component standard uncertainty uncertainty Spectrometer 0.5% Monitor output 1% stability fluctuations of the LINAC Sample positioning 3% Dose calculation 3% in the ESR cavity of the treatment planning system Dosimeter mass 0.5% Phantom positioning 0.5% determination ESR signal amplitude 4% Positioning of the 1% measurement alanine dosimeters Relative combined 5.05% 3.35% standard uncertainty ESR: electron spin resonance; LINAC: linear accelerator.
Kuzuya, "Nature of mechanoradical formation of substituted celluloses as studied by electron spin resonance," Chemical and Pharmaceutical Bulletin, vol.
Caplan, "Characterization of Si/Si[O.sub.2] interface defects by electron spin resonance," Progress in Surface Science, vol.
The electron spin resonance analysis was carried out in Rink's laboratory and at the McMaster Nuclear Reactor.
Presentamos excusas a nuestros lectores y al antropOlogo Javier AndrEs Sandoval Andrade puesto que en el Vol 15 No 2 del 2011 de la revista Earth Science research Journal (ESRJ) se publico el articulo titulado "Quaternary dating by electron spin resonance (ESR) applied to human tooth enamel" en el cual no se hace un correcto pie de pagina de la figura 1, ya que no es tomada de (Groot, 1992) como reza la misma, sino que es tomada de la tesis de pregrado titulada DATACION DE RESTOS HUMANOS PREHISPANICOS A TRAVES DE ESMALTE DENTAL USANDO RESONANCIA PARAMAGNETICA ELECTRONICA (EPR) (2010).
and David Schlossman, Kobo Products, Inc.; "Measurement of UV Initiated Free Radical Generation in Skin Substitutes by Electron Spin Resonance Spectroscopy," Ian Tooley, Ph.D., Robert Sayer, Surinder R Chahal and Rachel Haywood, Croda Europe; "Sensory Mapping Methodology Detects the Substantial Perceptible Effects of Emulsifiers in Emulsions," J.
Using Electron Spin Resonance (ESR) spectroscopy, DuPont has developed highly sensitive methods for detecting the metal chelating and radical scavenging activity of plant extracts.
"This is normally called electron spin resonance; with antimatter we call it positron spin resonance," says Mike Hayden, professor of physics at Simon Fraser University and an ALPHA team member.
EMR, also known as electron paramagnetic resonance (EPR) and as electron spin resonance (ESR), was first introduced more than 60 years ago, developed simultaneously but independently in Russia and England.

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