Multifrequency Probe for Pulsed EPR and ENDOR Spectroscopy |
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Authors: | Nikolai I. Avdievich Gary J. Gerfen |
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Affiliation: | Department of Physiology and Biophysics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461, USA. navdievi@aecom.yu.edu |
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Abstract: | The design, construction, and performance of a multifrequency pulsed EPR and ENDOR probe for use at cryogenic temperatures are described. Interchangeable resonators based on a folded strip line design allow variation of the resonance frequency over a range of 5-11 GHz. Variable coupling to the resonator is achieved capacitively via a simple mechanical adjustment which is thermally and mechanically stable. The entire assembly is robust and easily fabricated. Common methods of analyzing the resonator parameters such as the Q-factor and coupling coefficient are discussed quantitatively. Probe performance data and multifrequency pulsed ENDOR spectra are presented. |
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Keywords: | Abbreviations: EPR instrumentationAbbreviations: pulsed ENDORAbbreviations: ESEEMAbbreviations: resonatorAbbreviations: coupling measurement |
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