Difference between revisions of "Dqf cosy.m"
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| − | Phase-sensitive double-quantum filtered COSY pulse sequence. | + | {{DISPLAYTITLE:dqf_cosy.m}} __NOTOC__ |
| + | Phase-sensitive double-quantum filtered COSY pulse sequence. | ||
| − | + | ==Syntax== | |
| − | + | fid=dqf_cosy(spin_system,parameters,H,R,K) | |
| − | |||
| − | |||
| − | |||
| − | + | ==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. | ||
| + | |||
| + | H - Hamiltonian matrix, received from context function | ||
| + | |||
| + | R - relaxation superoperator, received from context function | ||
| + | |||
| + | K - kinetics superoperator, received from context function | ||
| − | + | ==Outputs== | |
| − | + | ||
| + | fid.cos, fid.sin - components of the free induction | ||
| + | decay for hypercomplex processing | ||
| + | |||
| + | ==Examples== | ||
| + | A DQF-COSY spectrum of strychnine (examples/nmr_liquids/dqf_cosy_strychnine.m) appears below. | ||
| + | |||
| + | [[File:dqf_cosy_strychnine.png]] | ||
| + | |||
| + | ==Notes== | ||
| + | The double-quantum filter is implemented as an exact analytical coherence-order projection, not as an explicit phase cycle or finite-gradient selection block. | ||
| + | |||
| + | ==See also== | ||
| + | [[noesy.m]], [[hsqc.m]], [[hmqc.m]], [[hnco.m]], [[hncoca.m]], [[tocsy.m]], [[roesy.m]], [[clip_hsqc.m]], [[coloc.m]], [[cosy.m]], [[crazed.m]], [[ct_cosy.m]], [[ct_hsqc.m]], [[dept.m]], [[deptq.m]], [[ecosy.m]], [[hetcor.m]], [[hmbc.m]], [[hoesy.m]], [[inadequate.m]], [[inadequate_2d.m]], [[inept.m]], [[inv_rec.m]], [[mqs.m]], [[mqs_refocus.m]], [[pansy_cosy.m]], [[pansy_triple.m]], [[sat_rec.m]], [[Built-in_experiments]] | ||
| + | |||
| + | ''Version 2.3, authors: [[Ilya Kuprov]], [[Luke Edwards]]'' | ||
Latest revision as of 19:36, 6 June 2026
Phase-sensitive double-quantum filtered COSY pulse sequence.
Syntax
fid=dqf_cosy(spin_system,parameters,H,R,K)
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.
H - Hamiltonian matrix, received from context function
R - relaxation superoperator, received from context function
K - kinetics superoperator, received from context function
Outputs
fid.cos, fid.sin - components of the free induction
decay for hypercomplex processing
Examples
A DQF-COSY spectrum of strychnine (examples/nmr_liquids/dqf_cosy_strychnine.m) appears below.
Notes
The double-quantum filter is implemented as an exact analytical coherence-order projection, not as an explicit phase cycle or finite-gradient selection block.
See also
noesy.m, hsqc.m, hmqc.m, hnco.m, hncoca.m, tocsy.m, roesy.m, clip_hsqc.m, coloc.m, cosy.m, crazed.m, ct_cosy.m, ct_hsqc.m, dept.m, deptq.m, ecosy.m, hetcor.m, hmbc.m, hoesy.m, inadequate.m, inadequate_2d.m, inept.m, inv_rec.m, mqs.m, mqs_refocus.m, pansy_cosy.m, pansy_triple.m, sat_rec.m, Built-in_experiments
Version 2.3, authors: Ilya Kuprov, Luke Edwards
