Applied Magnetic Resonance

, 34:289 | Cite as

High-Field DNP Spectrometer for Liquids

  • V. P. Denysenkov
  • M. J. Prandolini
  • A. Krahn
  • M. Gafurov
  • B. Endeward
  • T. F. Prisner


The construction of a prototype 400 MHz/260 GHz (9.2 T) liquid-state dynamic nuclear polarization (DNP) spectrometer is described. For this purpose a 400 MHz Bruker Avance nuclear magnetic resonance spectrometer was extended with a 260 GHz microwave setup including microwave sources (45 mW continuous-wave and 200 mW pulsed output power), a metal-dielectric waveguide transmission system for decoupling of microwave excitation and reflection, which can also be used for electron paramagnetic resonance (EPR) detection, and special double-resonance structures which have been developed to avoid microwave heating of aqueous samples during DNP experiments. Microwave performance and first EPR and DNP applications on nitroxide radicals in water at room temperature are presented.


Nuclear Magnetic Resonance Electron Paramagnetic Resonance Spectrum Yttrium Iron Garnet Electron Paramagnetic Resonance Line TEMPOL 
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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • V. P. Denysenkov
    • 1
  • M. J. Prandolini
    • 1
  • A. Krahn
    • 2
    • 3
  • M. Gafurov
    • 1
  • B. Endeward
    • 1
  • T. F. Prisner
    • 1
  1. 1.Institute for Physical and Theoretical Chemistry, Center for Biomolecular Magnetic ResonanceJ. W. Goethe UniversityFrankfurt am MainGermany
  2. 2.Bruker Elektronik GmbHRheinstettenGermany
  3. 3.Laboratoire de Chimié, Unité Mixte de Recherche, Centre National de la Recherche ScientifiqueEcole Normale SupérieureLyonFrance

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