Difference between revisions of "Psycosy.m"
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{{DISPLAYTITLE:psycosy.m}} __NOTOC__ | {{DISPLAYTITLE:psycosy.m}} __NOTOC__ | ||
| − | Alan Kenwright's spatially encoded COSY sequence described in https://doi.org/10.1002/mrc.4727 (Figure 4). | + | [[Alan Kenwright]]'s spatially encoded COSY sequence described in https://doi.org/10.1002/mrc.4727 (Figure 4). |
==Syntax== | ==Syntax== | ||
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fid=psycosy(spin_system,parameters,H,R,K,G,F) | fid=psycosy(spin_system,parameters,H,R,K,G,F) | ||
| − | == | + | ==Parameters== |
parameters.sweep sweep width in Hz | parameters.sweep sweep width in Hz | ||
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[[File:psycosy.png]] | [[File:psycosy.png]] | ||
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==See also== | ==See also== | ||
| − | [[psyche.m]], [[spencosy.m]], [[spendosy.m]], [[ | + | [[psyche.m]], [[spencosy.m]], [[spendosy.m]], [[st_ideal.m]], [[dosy_oneshot.m]], [[idosyzs.m]], [[spendosycosy.m]], [[ufmq.m]], [[Built-in_experiments]] |
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''Version 2.4, authors: [[Alan Kenwright]]'' | ''Version 2.4, authors: [[Alan Kenwright]]'' | ||
Latest revision as of 19:40, 6 June 2026
Alan Kenwright's spatially encoded COSY sequence described in https://doi.org/10.1002/mrc.4727 (Figure 4).
Syntax
fid=psycosy(spin_system,parameters,H,R,K,G,F)
Parameters
parameters.sweep sweep width in Hz
parameters.npoints number of points for both dimensions
parameters.spins nuclei on which the sequence runs,
specified as {'1H'}, {'13C'}, etc.
parameters.tmix mixing time, seconds
parameters.gamp gradient amplitude, T/m
parameters.sal_ang flip angle of the saltire chirp (degrees)
parameters.sal_dur pulse width of saltire chirp (s)
parameters.sal_del chirp pulse gradient duration (s)
parameters.sal_swp sweep width of saltire chirp (Hz)
parameters.sal_npt number of points in the saltire chirp
parameters.sal_smf saltire chirp smoothing factor
H Fokker-Planck Hamiltonian, received
from the imaging context
R Fokker-Planck relaxation superoperator,
received from the imaging context
K Fokker-Planck kinetics superoperator,
received from the imaging context
G Fokker-Planck gradient superoperators,
received from the imaging context
F Fokker-Planck diffusion and flow super-
operator, received from the context
Outputs
fid - two-dimensional free induction decay
Examples
Several examples may be found in the examples/nmr_spen directory. The PSYCOSY spectrum of salsalate is reproduced below, note that one of the two dimensions is pure shift.
See also
psyche.m, spencosy.m, spendosy.m, st_ideal.m, dosy_oneshot.m, idosyzs.m, spendosycosy.m, ufmq.m, Built-in_experiments
Version 2.4, authors: Alan Kenwright
