title: A dual-mode microwave resonator for double electron-electron spin resonance spectroscopy at W-band microwave frequencies.
abstract: We present a dual-mode resonator operating at/near 94 GHz (W-band) microwave frequencies and supporting two microwave modes with the same field polarization at the sample position. Numerical analysis shows that the frequencies of both modes as well as their frequency separation can be tuned in a broad range up to GHz. The resonator was constructed to perform pulsed ELDOR experiments with a variable separation of "pump" and "detection" frequencies up to Δν=350 MHz. To examine its performance, test ESE/PELDOR experiments were performed on a representative biradical system.
authors.affiliation: Max Planck Institute for Biophysical Chemistry, Research Group Electron Paramagnetic Resonance, Göttingen, Germany. Igor.Tkach@mpibpc.mpg.de
authors.forename: Igor
authors.initials: I
authors.lastname: Tkach
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Sicoli
authors.forename: Claudia
authors.initials: C
authors.lastname: Höbartner
authors.forename: Marina
authors.initials: M
authors.lastname: Bennati
mesh_terms: D003198:Computer Simulation; D004574:Electromagnetic Fields; D004578:Electron Spin Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D008872:Microwaves; D012984:Software