# Cosy.m

Phase-sensitive COSY pulse sequence. Syntax:

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


where H is the Hamiltonian commutation superoperator R is the rela- xation superoperator and K is the chemical kinetics superoperator. The following parameters are required:

 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.angle              second pulse angle in radians, usu-
ally pi/2, but also allows COSY45,
COSY60, etc.


Note: if the second pulse angle differs from 90 degrees, magnitude mode plotting is advised.