average coupling tensor in Interaction Frame

[Mengjia He]

Dear Ilya,

To analyze the pulse sequence, I'm considering calculating the Hamiltonian in the Interaction Frame, which is defined by the H_rf (RF part)+H_z (Zeeman part), since there is a big offset. So the effective J coupling part (H_J) should be rotated in this frame, is there any function to calculate the average J-coupling tensor or analyze pulse sequence with average Hamiltonian theory?

Best regards,
Mengjia

[kuprov]

Yes, these should get you started:

https://spindynamics.org/wiki/index.php?title=Average.m
https://spindynamics.org/wiki/index.php ... Rotframe.m
https://spindynamics.org/wiki/index.php?title=Intrep.m

Best wishes,
Ilya.

[Mengjia He]

thanks for your quick reply.

Best,
Mengjia