Multifrequency Probe for Pulsed EPR and ENDOR Spectroscopy

Avdievich, NI; Gerfen, GJ

doi:10.1006/jmre.2001.2450

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Multifrequency Probe for Pulsed EPR and ENDOR Spectroscopy

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https://www.sciencedirect.com/science/article/pii/S1090780701924504
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Avdievich, N., & Gerfen, G. (2001). Multifrequency Probe for Pulsed EPR and ENDOR Spectroscopy. Journal of Magnetic Resonance, 153(2), 178-185. doi:10.1006/jmre.2001.2450.

Cite as: https://hdl.handle.net/21.11116/0000-0005-A6C8-E

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.