EPR spectroscopy

Benchtop CW X-band spectrometer

Specifications
 Model  Magnettech ESR5000
 Temperature control  Variable temperature unit (T = 93 K – 473 K), finger Dewar
Benchtop CW X-band spectrometer

CW X-band spectrometer

Specifications
 Model  Bruker EMXplus
 Resonators  ER4122SHQE, ER4119HS, ER4103TM
 Temperature control  Continuous-flow cryostat (Oxford Instruments ESR900, T = RT – 5 K)
CW X-band spectrometer

CW/pulsed X/Q-band spectrometer with shaped pulses and ENDOR

Specifications
 Model  Bruker Elexsys E580
 Frequency bands  X (9.5 GHz), Q (34 GHz)
 X-band resonators  ER4118X-MS2, ER4118X-MD5W, EN4118X-MD4W (ENDOR)
 X-band pulse amplifier  1 kW TWT
 Q-band resonators  ER5106QT-IIW, EN51017D2 (ENDOR)
 Q-band pulse amplifier  300 W TWT
 Temperature control  Cryogen-free cryostat (Cryogenic, T = 325 K – 3 K)
 Signal digitiser  SpecJet III (0.5 ns time resolution, 14 bit amplitude resolution)
 AWG  SpinJet AWG generator (0.625 ns time resolution, 14 bit amplitude resolution)
 ENDOR  DICE ENDOR generator (100 kHz – 250 MHz), 150 W RF amplifier
CW/pulsed X/Q-band spectrometer with shaped pulses and ENDOR

High-sensitivity home-built pulsed X-band spectrometer

Specifications
 Microwave source  DC-12 GHz vector signal generator with low phase noise
 Pulse generator  16-bit AWG with 540 MHz bandwidth
 Signal digitiser  500 MS/s, 14 bit digitiser with on-board averaging
High-sensitivity home-built pulsed X-band spectrometer

The equipment further includes an ultra-low-noise cryogenic probehead, providing >10× signal-to-noise improvement, and superconducting microwave resonators.

Additional equipment

Tuneable pulsed Laser with broadband OPO

Specifications
 Model  Litron Aurora II Integra OPO A23-39-21
 Pump source  Q-switched Nd:YAG
 Wavelength range  410 nm – 710 nm (signal) / 710 nm – 2600 nm (idler)
 Pulses  39 mJ (signal) / 14 mJ (idler), 6 ns, 21 Hz repetition rate
High-sensitivity home-built pulsed X-band spectrometer

Spectroelectrochemical cell

With our home-built equipment paramagnetic intermediates can be generated inside the EPR capillary and characterised under precise electrochemical conditions resorting to either solution- or (protein) film electrochemistry (PFE-EPR).