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250 MHz Rapid Scan Cross Loop Resonator

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Abstract

A 25 mm diameter 250 MHz crossed-loop resonator was designed for rapid scan electron paramagnetic resonance imaging. It has a saddle coil for the driven resonator and a fine wire, loop gap resonator for the sample resonator. There is good separation of E and B fields and high isolation between the two resonators, permitting a wide range of sample types to be measured. Applications to imaging of nitroxide, trityl, and LiPc samples illustrate the utility of the resonator. Using this resonator and a trityl sample the signal-to-noise of a rapid scan absorption spectrum is about 20 times higher than for a first-derivative CW spectrum.

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Acknowledgements

The spectrometer pulse and rapid scan development was supported in part by NIH NCI AIP Grant CA177744, and in part by NIH P41EB002034 (Howard J. Halpern, PI).

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Denver, Denver, CO, 80210, USA

    Laura A. Buchanan, Lukas B. Woodcock, Yilin Shi, Sandra S. Eaton & Gareth R. Eaton

  2. School of Engineering and Computer Science, University of Denver, Denver, CO, 80210, USA

    George A. Rinard & Richard W. Quine

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  1. Laura A. Buchanan
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  2. Lukas B. Woodcock
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Corresponding author

Correspondence to Gareth R. Eaton.

Electronic supplementary material

Below is the link to the electronic supplementary material.

723_2018_1078_MOESM1_ESM.pdf

Supplementary material 1 (PDF 26 kb) The.stl files for resonator construction and python files for data acquisition are provided as electronic supplementary information

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Buchanan, L.A., Woodcock, L.B., Rinard, G.A. et al. 250 MHz Rapid Scan Cross Loop Resonator. Appl Magn Reson 50, 333–345 (2019). https://doi.org/10.1007/s00723-018-1078-y

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  • DOI: https://doi.org/10.1007/s00723-018-1078-y

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