A Theoretical Study of the Biselective Double Pulsed Field Gradient Spin-Echo NMR Experiment

Jean-Marc Nuzillard (1)

1 URCA - Université de Reims Champagne-Ardenne

The application of a biselective radiofrequency pulse to a coupled homonuclear spin system produces effets that are exploited in liquid-state NMR experiments. The insertion of such an RF pulse in a double pulsed field gradient spin echo sequence results in a module for the biselective production of antiphase magnetization states. Biselectivity is obtained through cosine modulation of a singly selective pulse profile. A full description of the module behavior is possible by means of four parameters, among which two are related to a property that was named "pulse ellipticity". The theory is in good agreement with the experimental results and numerical simulations. It is thus possible to predict how a maximum of antiphase magnetization can be produced.

Mots clés: Physical Sciences

Jean-Marc Nuzillard. A Theoretical Study of the Biselective Double Pulsed Field Gradient Spin-Echo NMR Experiment. Molecular Physics, 2008, 105 (17-18), pp.2243-2250. ⟨10.1080/00268970701530975⟩. ⟨hal-00513125⟩