Quantification of cross polarization with relaxation compensated reciprocity relation in NMR

Computer simulated reciprocity relation between the dynamics of cross polarization (CP) and cross depolarization (CDP) for a powder sample under fast magic angle spinning (MAS = 40 kHz). The symmetrical pattern between CP(t) and CDP(t) manifests the quantification of cross polarization under fast MAS. In the simulation, the dipolar coupling constant for a 1H-13C spin pair is d = 25.37 kHz and the RF spin-locking fields f1I and f1S are 140 and 100 kHz, respectively.