J-band Liquid DNP Spectrometer (home-built)

 

The DNP spectrometer is built on base of the 400 MHz Bruker Avance I NMR spectrometer which is extended with a 263 GHz /10 W gyrotron, and quasi-optical microwave bridge. Additional superconducting coil mounted into the magnet system allows sweeping the magnetic field in the range of +/- 80 mT around the central field. Two home-built probeheads for liquid samples use double resonance structures (helix and Fabry-Perot/stripline) to be able to run in-situ NMR, EPR, and cw-DNP experiments at room temperature.