Electron Spin Resonance Spectrometer

Thompson, Jeroen W.

doi:10.1007/978-94-007-6304-3_52

Jeroen W. Thompson⁵

Part of the book series: Encyclopedia of Earth Sciences Series ((EESS))

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Synonyms

Electron paramagnetic resonance spectrometer; EPR spectrometer; ESR spectrometer

Definition

Instrument for the detection of electron paramagnetic transitions, consisting of a tunable source of electromagnetic radiation, a resonant cavity, an electromagnet, and a detector.

The electron spin resonance (ESR) spectrometer is employed to detect electron paramagnetic resonance transitions. Although a wide variety of designs exist, the typical commercial continuous-wave spectrometer consists of (1) a microwave source tunable within a limited range of frequencies near 9.4 GHz; (2) a sample cavity, often cylindrical, capable of maintaining an electromagnetic standing wave; (3) an electromagnet capable of generating and ramping a uniform magnetic field, along with superimposed rapid oscillation up to 100 kHz in frequency; (4) a detection system which amplifies the reflected microwave signal; and (5) an internal magnetic field standard such as MnO.

Transitions between electronic energy...

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Bibliography

Weil, J. A., Bolton, J. R., and Wertz, J. E., 1994. Electron Paramagnetic Resonance: Elementary Theory and Practical Applications. New York: Wiley.
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Authors and Affiliations

Department of Medical Physics and Applied Radiation Sciences, McMaster University, 1280 Main St West, Hamilton, ON, Canada
Jeroen W. Thompson

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Jeroen W. Thompson
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Correspondence to Jeroen W. Thompson .

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McMaster University, Hamilton, ON, Canada
W. Jack Rink & Jeroen W. Thompson &

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Thompson, J.W. (2015). Electron Spin Resonance Spectrometer. In: Jack Rink, W., Thompson, J.W. (eds) Encyclopedia of Scientific Dating Methods. Encyclopedia of Earth Sciences Series. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6304-3_52

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DOI: https://doi.org/10.1007/978-94-007-6304-3_52
Published: 18 June 2015
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-6303-6
Online ISBN: 978-94-007-6304-3
eBook Packages: Earth and Environmental ScienceReference Module Physical and Materials ScienceReference Module Earth and Environmental Sciences

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