wise.m

WISE (WIdeline SEparation) is a powder MAS heteronuclear correlation experiment. In the common 1H-13C implementation, molecular dynamics information is contained in 1H line shapes that are separated in the second dimension by 13C chemical shifts. Further information in (https://doi.org/10.1021/ma00038a037).

Syntax

    fid=wise(spin_system,parameters,H,R,K)

Arguments

   parameters.spins        - working spins, e.g. {'1H',13C'}

   parameters.hi_pwr       - amplitude of high power pulses 
                             on the high-gamma channel, Hz

   parameters.cp_pwr       - amplitude of CP pulse on each 
                             channel during the CP contact
                             time, Hz

   parameters.cp_dur       - CP contact time duration, s

   parameters.rho0         - initial state

   parameters.coil         - detection state

   parameters.sweep        - sweep width, Hz for F1, F2

   parameters.npoints      - number of points in F1, F2
 
   H  - Hamiltonian matrix, received from context function

   R  - relaxation superoperator, received from context function

   K  - kinetics superoperator, received from context function

Outputs

   fid.sin, fid.cos        - sine and cosine components
                             of the States quadrature

Examples

Below is the output of examples/nmr_solids/wise_mas_gly.m example file containing the WISE simulation for 13C-labelled glycine powder under magic angle spinning.

See also

Solid state NMR experiments

Version 2.8, authors: Guinevere Mathies