# Cosy.m

From Spinach Documentation Wiki

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.