2021/12/22 by Yu He, Runqi Kang, He, Yu +7
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Electron Spin Resonance Studies #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Instrumentation and Detectors (physics.ins-det) #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2112.11807
openalex publication_date 2021/12/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report a new design of resonant cavity for W-band EPR spectrometer. It suits with both solenoid-type and split-pair magnets. The cavity operates on the TE011 mode, where the microwave magnetic field is along the cylindrical axis. Its cylindrical axis is horizontal, so the magnetic field of the microwave is always perpendicular to the vertical external magnetic field provided by a solenoid-type magnet. By rotating the cavity, the microwave magnetic field can also be perpendicular to a horizontal external field when a split-pair magnet is used. Furthermore, a tiny metal cylinder allows for the adjustment of coupling. This enables both continuous-wave (CW) and pulsed EPR experiments. The coupling-varying ability has been demonstrated by reflection coefficient (S11) measurement, and CW and pulsed EPR experiments have been conducted. The performance data indicates a prospect of wide applications of the cavity in the fields of physics, chemistry and biology.