X-band continuous wave EPR
A Bruker Elexsys E500-A system with several resonators, including amongst others a high-sensitivity and high Q-factor resonator (ER4122SHQE) with optical access. Experiments can be performed from 2.5K up to room temperature, through the integration with an oxford liquid helium cryostat. The setup has been additionally implemented with electrically-detected magnetic resonance (EDMR) and optically-detected magnetic resonance (ODMR). Light excitation (for ODMR and light-induced EPR) is possible using various excitation sources, including several lasers and lamps throughout the UV and visible part of the spectrum. For the EDMR, extensions with current amplifiers and several electrical detection schemes have been integrated, while for the ODMR both visible and near-infrared detectors are available. Also time-resolved EPR studies (millisecond timescale) can be performed as well as in situ electrochemical studies.
Pulsed X-band EPR/ENDOR
The Bruker E580 Elexsys instrument allows performing pulsed EPR and ENDOR (electron nuclear double resonance) in the X band (~9.7 GHz). The setup was recently extended with a SpinJet arbitrary wave generator (AWG) unit to perform pulse shaping. Using an Oxford Instruments flow cryostat combined with a cryogen-free 5K stinger and heat exchanger, measurements can be performed from 5K up to room temperature.
W/X-band (95/9.5 GHz) continuous wave and pulsed EPR and ODMR setup
The W-band (95 GHz) EPR spectrometer (Bruker bridge, Oxford superconducting magnet) is operational in continuous-wave and pulsed mode. Optically detected magnetic resonance (ODMR) is possible using either a Fabry-Perot cavity or a cylindrical cavity. PELDOR and pulsed ENDOR experiments are also possible. All EPR, ENDOR, PELDOR and ODMR measurements can be performed in the 1.5-300 K temperature range, with facilities for orientational studies of small single crystals.
Both the X-band continuous-wave EPR and pulsed X-band EPR/ENDOR have recently been upgraded by funding from the FWO Medium-scale research infrastructure (FWO I004920N, 2023). The TSM2 research group uses this instrumentation for both applied and fundamental research, and is open to perform service measurements for third parties. When interested, please contact prof. Sabine van Doorslaer (CW EPR, pulsed EPR) or prof. Sofie Cambre (ODMR, EDMR).