Interrupted proton decoupling interruption time

The pulse sequences used for this purpose are known as interrupted decoupling (Gerasimowicz et al. 1984, Haw et al. 1984, Barron et al. 1985, Maciel et al. 1985), delayed decoupling (Manders 1987) or dipolar dephasing (Hatcher 1987). All involve an interval, t inserted in the pulse sequence between the end of the contact time and the beginning of data acquisition as shown in Fig. 4.5.2. Both nC and proton RF transmitters are switched off for the duration of t and strong static dipolar interactions between, 3C... 

An experiment that is useful for assigning nonprotonated carbon resonances in the NMR spectrum is the interrupted-decoupling CP experiment [74,75]. In this experiment, the decoupling of the protons is interrupted (by turning off the proton rf field) for a predetermined time. During the interrupted-decoupling period, 3C... 

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