The MagLab is funded by the National Science Foundation and the State of Florida.
The MagLab is funded by the National Science Foundation and the State of Florida.
Using sub-THz and THz wave sources (BWOs), this transmission-type EPR/ESR spectrometer can be quasi-continuously frequency-tuned via applied voltage.
The sub-THz and THz wave sources used in the BWO-based spectrometer can also be used independently in EPR/ESR-type experiments. So far they have been successfully used in conjunction with the Keck 25-T resistive magnet, the SCMM 20-T superconducting magnet, and the EMR 15/17-T superconducting magnet. Given a proper probe, they can be employed with other magnets as well.
Resistive Magnet
Superconducting Magnet
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Credit: National MagLab
Stoll, S., et al, Hydrogen bonding of tryptophan radicals revealed by EPR at 700 GHz, J. Am. Chem. Soc. 2011, 133.
Krzystek, J., et al, High-frequency and -field EPR study of the Fe(H2O)62+ ion in ferrous fluorosilicate, J. Magn. Reson. 2011, 213.
Herchel, R., et al, Definitive determination of zero-field splitting and exchange interactions in a Ni(II) dimer: investigation of [Ni2(en)4Cl2]Cl2 using magnetization and tunable-frequency high-field EPR, J. Am. Chem. Soc. 2007, 129.
Zvyagin, S., et al, Elementary excitations in the spin-1 anisotropic Heisenberg antiferromagnetic chain system NiCl2-4SC(NH2)2, Phys. Rev. Lett. 2007, 98.
Krzystek, J., et al, Tunable-frequency high-field electron paramagnetic resonance, J. Magn. Reson. 2006 178.
Last modified on 16 March 2026
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