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Weak Field Dynamic Nuclear Polarization with Phosphorus Radicals.

  • Y. Ayant
  • N. Kernevez
  • L. Secourgeon
  • P. Tordo
Conference paper

Abstract

Dynamic Nuclear Polarization (1) is quite useful for NMR earth field magnetometer (2) whose sensitivity increases with the DNP factor. The interest of free radicals is due to the hyperfine structure which induces an important separation of the electron energy levels at weak fields and increases thereby the DNP factor. The DNP between solvents protons and nitroxide radicals is well known (3). We describe in this paper DNP calculation and measurements on phosphorus radicals which present a more important hyperfine structure.

References

  1. (1).
    Abragam A.,The principles of nuclear Magnetism;Clarendon Press,Oxford 1961Google Scholar
  2. (2).
    Salvi A., Rev. Phys. Ap. 1970 (5) 131CrossRefGoogle Scholar
  3. (3).
    Ayant Y., Besson R., Casalegno R., J. Physique 41 (1980) 1183–1192CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Y. Ayant
    • 1
  • N. Kernevez
    • 1
  • L. Secourgeon
    • 1
  • P. Tordo
    • 2
  1. 1.LETI-CENGGrenobleFrance
  2. 2.L.S.R.E.P.Univ. de ProvenceMarseille Cedex 13France

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