Advantages of High Frequency EPR

MW Nutation Experiment at W-Band
MW-Nutation of Coal Sample at 94 GHz. The nutation period is 62 ns with the 400 mW High Power Upgrade unit.
  • Increase in spectral resolution due to the higher magnetic field.
  • Increase in detection sensitivity for samples of limited quantity due to higher resonator filling factor.
  • Increase in orientation selectivity in the investigation of disordered systems.
  • Accessibility of spin systems with larger zero-field splitting due to the larger microwave quantum energy.
  • Better separation of the ENDOR spectra of different nuclei.
  • Improvement in the ENDOR detectability of low-frequency nuclear spins.
  • Simplification of spectra due to the reduction of second-order effects at high fields.


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