a High Power (10 W) TWT-based Pulse EPR Spectrometer Operating at 263 GHz designed for Bioinorganic EPR spectroscopy (#11)
We have recently published the design and performance of a 263-GHz traveling wave tube (TWT) amplifier designed for pulse electron paramagnetic resonance (EPR) spectroscopy (Pan et al, 2023). A periodic permanent magnet (PPM) focused pencil beam electron optical system is used. A folded waveguide (FWG) slow wave structure (SWS) with modified serpentine bends is optimized to provide high-power, wideband performance and stable operation. This TWT amplifier provides a maximum 11.9-W saturation output power and 25.5-dB saturation gain. This amplifier has been integrated into a homebuilt 263 GHz quasi-optical bridge EPR spectrometer. We will report pulse EPR performance of this unique high frequency, high power instrument, in particular targeted high spin metals of great interest to bioinorganic chemistry
- P. Pan et al., "Demonstration of a 263-GHz Traveling Wave Tube for Electron Paramagnetic Resonance Spectroscopy," in IEEE Transactions on Electron Devices, vol. 70, no. 11, pp. 5897-5902, Nov. 2023, doi: 10.1109/TED.2023.3312230.