The quasistationary magnetization in dipolar solids for pulsed spin-locking experiments is calculated. A temporary equilibrium after several pulses is assumed to develop under a Hamiltonian obtained with average Hamiltonian theory from the terms for the rf field and the dipolar interaction. The effect of finite pulse width is discussed. Experimental data from a CaF₂ sample support the theoretical results. It is shown that pulse flip angles φₓ=180^∘±ε have the same effect as the flip angle ε.
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Suwelack et al. (1980) studied this question.
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