Fig. 3: The framework for modeling the parallel nuclear magnetic resonance experiments.
From: A digital twin for parallel liquid-state nuclear magnetic resonance spectroscopy

a The excitation stage, the parallel pulse are processed for calculating the coupled B1 field, and a composite spin system is built in Spinach to accommodate the spin-dynamic calculation of multiple samples in the probe, all channels are excited with synchronous pulse sequences. b The reception stage, the magnetization is recorded by the radio frequency coils, suffering from coupling, and then delivered to a post-processing module for signal decomposition. The FID is free induction decay, μ is the magnetic moment, B0 is the static magnetic field and B1 is the radio frequency magnetic field.