Budker group style gamma-weighted pulse-acquire sequence in zero field. Uses gamma-weighted initial state (corresponding to using a pre-polarisation magnet at high temperature), gamma-weighted pulse operators and gamma-weighted detection state.
parameters.sweep - the width of the spectral window (Hz) parameters.npoints - number time steps in the simulation parameters.detection - 'uniaxial' to emulate common ZULF hardware, 'quadrature' for proper frequency sign discrimination parameters.flip_angle - pulse flip angle in radians for protons; for other nuclei, this will be scaled by the gamma ratio H - Hamiltonian matrix, received from context function R - relaxation superoperator, received from context function K - kinetics superoperator, received from context function
fid - free induction decay
Multiple examples are avilable in examples/nmr_zerofield directory. ZULF simulation for pyridine, matching Figure 3 from http://dx.doi.org/10.1021/ja2112405, is reproduced below.
Version 2.5, authors: Ilya Kuprov