Double quantum cross polarization. Heteronuclear excitation and detection of NMR double quantum transitions in solids
- 1 August 1980
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 73 (3), 1086-1094
- https://doi.org/10.1063/1.440258
Abstract
The application of Hartmann–Hahn cross polarization for the enhancement and for the detection of NMR double quantum coherence is investigated. The matching conditions and relaxation rates are discussed. It is found, in particular, that the double quantum cross relaxation rate is four times that of single quantum cross polarization. Double quantum cross polarization is utilized for the heteronuclear excitation and detection of nitrogen‐14 double quantum transitions in solids.Keywords
This publication has 19 references indexed in Scilit:
- Dipolar broadening of double-quantum nuclear magnetic resonances in solidsPhysics Letters A, 1979
- Fictitious spin 1/2 operator formalism for multiple quantum NMRThe Journal of Chemical Physics, 1978
- Selective excitation and detection in multilevel spin systems: Application of single transition operatorsThe Journal of Chemical Physics, 1977
- High resolution 14N NMR in solids: Single crystals of ammonium hydrogen oxalate hemihydrateThe Journal of Chemical Physics, 1977
- Operator formalism for double quantum NMRThe Journal of Chemical Physics, 1977
- Dynamics of cross relaxation in nuclear magnetic double resonancePhysical Review B, 1975
- Double-Resonance Fourier-Transform Spectroscopy in SolidsPhysical Review B, 1973
- Proton-enhanced NMR of dilute spins in solidsThe Journal of Chemical Physics, 1973
- Scheme for Sensitive Nuclear Double-Resonance Detection: Deuterium and 13CThe Journal of Chemical Physics, 1970
- Nuclear Double Resonance in the Rotating FramePhysical Review B, 1962