250 MHz Rapid Scan Cross Loop Resonator
2019
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.
Keywords:
- Nuclear magnetic resonance
- Analytical chemistry
- Electromagnetic coil
- Absorption spectroscopy
- Saddle
- Electron paramagnetic resonance
- Resonator
- Chemistry
- electron paramagnetic resonance imaging
- high isolation
- rapid scan
- Solid-state physics
- loop gap resonator
- Optoelectronics
- Nitroxide mediated radical polymerization
- Correction
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- Cite
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