Abstract #1506

Design & Performance of a Multi-Sample Dissolution Dynamic Nuclear Polarization Setup

Michael Batel¹, Marcin Krajewski², Kilian Weiss², Oliver With¹, Alexander Dpp¹, Andreas Hunkeler¹, Martin Gimersky³, Matthias Ernst¹, Sebastian Kozerke²

¹Laboratory of Physical Chemistry, ETH Zrich, Zrich, Switzerland; ²Institute for Biomedical Engineering, University & ETH Zrich, Zrich, Switzerland; ³Laboratory for Electromagnetic Fields and Microwave Electronics, ETH Zrich, Zrich, Switzerland

A multi-sample dissolution DNP system compatible with commercial wide-bore magnets is presented. The system is designed to accommodate up to six samples on a revolver-style sample changer permitting exchange at liquid Helium temperatures. The system includes EPR and NMR capabilities for monitoring purposes. 13-C DNP enhancements for pyruvic acid with the trityl radical OX63 are reported. In the solid-state 21% polarization is reached and in the dissolved liquid-state the enhancement factor measured is more than 12000 at 7 T.