Difference between revisions of "Idosyzs.m"
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parameters.coil - detection state | parameters.coil - detection state | ||
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parameters.spins - nuclei on which the sequence runs | parameters.spins - nuclei on which the sequence runs | ||
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parameters.sel_g_amp - gradient amplitude during the selective pulse, T/m | parameters.sel_g_amp - gradient amplitude during the selective pulse, T/m | ||
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parameters.rf_phi - phase of the inversion pulse, rad/s | parameters.rf_phi - phase of the inversion pulse, rad/s | ||
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parameters.delta_big - length of the diffusion delay, s | parameters.delta_big - length of the diffusion delay, s | ||
parameters.delta_sml - pulse width of the gradient for diffusion | parameters.delta_sml - pulse width of the gradient for diffusion | ||
encoding, s | encoding, s | ||
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parameters.rf_dur - length of the selective 180 degree pulse, 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.filename - a character string specifying the pulse shape, e.g gaussian_1000.pk | ||
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parameters.pulse_npoints - number of points in the soft pulse | parameters.pulse_npoints - number of points in the soft pulse | ||
parameters.diff - diffusion constant, m^2/s | parameters.diff - diffusion constant, m^2/s | ||
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The last five parameters (H,R,K,G,F) are built automatically by [[imaging.m]] context function | The last five parameters (H,R,K,G,F) are built automatically by [[imaging.m]] context function | ||
when this sequence is called from that [[Kernel_contexts|context]]. | when this sequence is called from that [[Kernel_contexts|context]]. | ||
Revision as of 17:41, 5 June 2026
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)
Arguments
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
Version 2.4, authors: Maria Grazia Concilio, Gareth Morris
