Applied Magnetic Resonance

, Volume 50, Issue 1–3, pp 333–345 | Cite as

250 MHz Rapid Scan Cross Loop Resonator

  • Laura A. Buchanan
  • Lukas B. Woodcock
  • George A. Rinard
  • Richard W. Quine
  • Yilin Shi
  • Sandra S. Eaton
  • Gareth R. EatonEmail author
Original Paper


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.



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).

Supplementary material

723_2018_1078_MOESM1_ESM.pdf (26 kb)
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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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Chemistry and BiochemistryUniversity of DenverDenverUSA
  2. 2.School of Engineering and Computer ScienceUniversity of DenverDenverUSA

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