Two-Pulse Phase Modulation Based Decoupling Schemes for Removing Heteronuclear Spin Interactions in the NMR Spectroscopy of
Isotropic Systems: An Analysis Using Experiments and Numerical Simulations
Figure 1
The profiles of (a) TPPM, (b) SWf-TPPM-4, (c) SWf-TPPM-5, (d) SWf-TPPM-6, (e) SWf-TPPM-7, and (f) SWf-TPPM-11 sequences. The pulse length, normalized with respect to the central pulse pair of various SWf-TPPM sequences, is plotted against the number of the TPPM blocks in the corresponding decoupling sequence. The ordinate denotes the multiplicative factors that determine the corresponding profile.