Composite Pulse Decoupling¶

Q1¶

Reproduce this classic plot from Levitt, M.H., and Freeman, R. (1981) Composite Pulse Decoupling. J. Magn. Reson., 507 (3), 502–507.

The composite pulse they use for decoupling is: RRR'R', with R = 90(x) 240(y) 90(x) and R' = 90(-x) 240(-y) 90(-x)

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Q2¶

Reproduce this plot from the article Shaka, A.J., Keeler, J., Frenkiel, T., and Freeman, R. (1983) An improved sequence for broadband decoupling: WALTZ-16. J. Magn. Reson., 52 (2), 335–338.