idosyzs.m

A simplified model of the Zangger-Sterk pure shift iDOSY pulse sequence for studies of the diffusional attenuation during soft pulses as described in https://doi.org/10.1016/j.jmr.2019.02.010.

Syntax

    inten=idosyzs(spin_system,parameters,H,R,K,G,F)

Parameters

  parameters.rho0           - initial state

  parameters.coil           - detection state

  parameters.spins          - nuclei on which the sequence runs

  parameters.g_amp          - gradient amplitude for diffusion encoding, T/m

  parameters.sel_g_amp      - gradient amplitude during the selective pulse, T/m

  parameters.rf_phi         - phase of the inversion pulse, rad/s  

  parameters.delta_big      - length of the diffusion delay, s

  parameters.delta_sml      - pulse width of the gradient for diffusion
                               encoding, s   

  parameters.rf_dur         - length of the selective 180 degree pulse, s

  parameters.filename       - a character string specifying the pulse shape, e.g gaussian_1000.pk

  parameters.pulse_npoints  - number of points in the soft pulse

  parameters.diff           - diffusion constant, m^2/s

  The last five parameters (H,R,K,G,F) are built automatically by imaging.m context function 
  when this sequence is called from that context.

Outputs

  fid - Intensity is the first point in the FID

Examples

An example is available in Spinach in: examples/nmr_spen/idosyzs_test_1.m.

See also

imaging.m, chirp_pulse.m, shaped_pulse_xy.m, step.m, evolution.m, coherence.m, dosy_oneshot.m, spendosy.m, spendosycosy.m, psyche.m, psycosy.m, spencosy.m, st_ideal.m, ufmq.m, Built-in_experiments, Kernel_functions

Version 2.4, authors: Maria Grazia Concilio, Gareth Morris