Difference between revisions of "Spendosy.m"

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Ultrafast DOSY pulse sequence. Syntax:
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{{DISPLAYTITLE:spendosy.m}} __NOTOC__
 
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Ultrafast DOSY pulse sequence.  
  
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==Syntax==
  
 
     fid=spendosy(spin_system,parameters,H,R,K,G,F)
 
     fid=spendosy(spin_system,parameters,H,R,K,G,F)
  
The following parameters are required
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==Parameters==
  
parameters.dims          size of the sample in m
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    parameters.dims          size of the sample in m
 
   
 
   
parameters.npts          number of spin packets
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    parameters.npts          number of spin packets
 
   
 
   
parameters.spins          nuclei on which the sequence runs
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    parameters.spins          nuclei on which the sequence runs
 
   
 
   
parameters.deltat        timestep for acquisition
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    parameters.deltat        timestep for acquisition
 
   
 
   
parameters.npoints        number of acquired points for each  
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    parameters.npoints        number of acquired points for each
                          gradient readout
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    gradient readout
 
   
 
   
parameters.nloops        number of loop, where each loop consists of  
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    parameters.nloops        number of loop, where each loop consists of
                          a positive and a negative readout
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    a positive and a negative readout
 
   
 
   
parameters.offset        offset  
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    parameters.offset        offset
 
   
 
   
parameters.cond          bondary conditions  
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    parameters.cond          bondary conditions
 
   
 
   
parameters.Ga            acquisition gradient in T/m
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    parameters.Ga            acquisition gradient in T/m
 
   
 
   
parameters.pulsenpoints  number of points in the pulse shape
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    parameters.pulsenpoints  number of points in the pulse shape
 
   
 
   
parameters.smfactor      smoothing factor for the pulse
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    parameters.smfactor      smoothing factor for the pulse
 
   
 
   
parameters.Te            duration of the pulse
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    parameters.Te            duration of the pulse
 
   
 
   
parameters.Tau            duration extra dephasing gradient
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    parameters.Tau            duration extra dephasing gradient
 
   
 
   
parameters.BW            bandwidth of the pulse
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    parameters.BW            bandwidth of the pulse
 
   
 
   
parameters.Ge            encoding gradient in T/m
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    parameters.Ge            encoding gradient in T/m
 
   
 
   
parameters.chirptype      can be 'wurst' or 'smoothed'
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    parameters.chirptype      can be 'wurst' or 'smoothed'
 
 
parameters.td            diffusion delay
 
 
   
 
   
H                        Fokker-Planck Hamiltonian
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    parameters.td            diffusion delay
 
   
 
   
R                         Fokker-Planck relaxation superoperator
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    H                         Fokker-Planck Hamiltonian
 
   
 
   
K                         Fokker-Planck kinetics superoperator
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    R                         Fokker-Planck relaxation superoperator
 
   
 
   
G                         Fokker-Planck gradient superoperators
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    K                         Fokker-Planck kinetics superoperator
 
   
 
   
F                         Fokker-Planck diffusion and flow superoperator
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    G                         Fokker-Planck gradient superoperators
 
   
 
   
Note: the last five parameters are built automatically by [[imaging.m]] context function when this sequence is called from that [[Kernel_contexts|context]].
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    F                        Fokker-Planck diffusion and flow superoperator
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==Outputs==
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    fid - free induction decay
  
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==See also==
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[[idosyzs.m]], [[dosy_oneshot.m]], [[psycosy.m]], [[psyche.m]], [[spencosy.m]], [[spendosycosy.m]], [[st_ideal.m]], [[ufmq.m]], [[Built-in_experiments]]
  
 
''Version 1.9, authors: [[Jean-Nicolas Dumez]], [[Ilya Kuprov]], [[Ludmilla Guduff]]''
 
''Version 1.9, authors: [[Jean-Nicolas Dumez]], [[Ilya Kuprov]], [[Ludmilla Guduff]]''

Latest revision as of 19:41, 6 June 2026

Ultrafast DOSY pulse sequence.

Syntax

    fid=spendosy(spin_system,parameters,H,R,K,G,F)

Parameters

    parameters.dims           size of the sample in m

    parameters.npts           number of spin packets

    parameters.spins          nuclei on which the sequence runs

    parameters.deltat         timestep for acquisition

    parameters.npoints        number of acquired points for each
    gradient readout

    parameters.nloops         number of loop, where each loop consists of
    a positive and a negative readout

    parameters.offset         offset

    parameters.cond           bondary conditions

    parameters.Ga             acquisition gradient in T/m

    parameters.pulsenpoints   number of points in the pulse shape

    parameters.smfactor       smoothing factor for the pulse

    parameters.Te             duration of the pulse

    parameters.Tau            duration extra dephasing gradient

    parameters.BW             bandwidth of the pulse

    parameters.Ge             encoding gradient in T/m

    parameters.chirptype      can be 'wurst' or 'smoothed'

    parameters.td             diffusion delay

    H                         Fokker-Planck Hamiltonian

    R                         Fokker-Planck relaxation superoperator

    K                         Fokker-Planck kinetics superoperator

    G                         Fokker-Planck gradient superoperators

    F                         Fokker-Planck diffusion and flow superoperator

Outputs

    fid - free induction decay

See also

idosyzs.m, dosy_oneshot.m, psycosy.m, psyche.m, spencosy.m, spendosycosy.m, st_ideal.m, ufmq.m, Built-in_experiments

Version 1.9, authors: Jean-Nicolas Dumez, Ilya Kuprov, Ludmilla Guduff