Enhanced dynamic nuclear polarization via swept microwave frequency combs

  title={Enhanced dynamic nuclear polarization via swept microwave frequency combs},
  author={A. Ajoy and R. Nazaryan and K. Liu and X. Lv and B. Safvati and G. Wang and E. Druga and J. Reimer and D. Suter and C. Ramanathan and C. A. Meriles and A. Pines},
  journal={Proceedings of the National Academy of Sciences},
  pages={10576 - 10581}
  • A. Ajoy, R. Nazaryan, +9 authors A. Pines
  • Published 2018
  • Physics, Medicine
  • Proceedings of the National Academy of Sciences
  • Significance Dynamic nuclear polarization (DNP) can lead to rapidly accelerated NMR spectroscopy and MRI imaging via significant magnetic resonance signal gains. We develop a technique of microwave frequency comb DNP that is especially suited to broad-spectrum electron radicals widely used for DNP in a variety of contexts. The frequency comb allows one to overcome the bottleneck set by slow electron sweeps, increasing the effective number of polarization transfer events and resulting in a… CONTINUE READING

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