Question: Consider the pathway shown below for a heteronuclear experiment. Write down the spatially dependent phase which accrues during the two gradient pulses, and hence determine

Consider the pathway shown below for a heteronuclear experiment.

Write down the spatially dependent phase which accrues during the two gradient pulses, and hence determine the ratio (G1T1)/(G2T2) which will refocus the pathway.
Assuming that U is 1H and S is 15N, and that the gradients have the same duration, work out the ratio of gradient strengths needed to select this pathway, given that Î³ (1H) ‰ˆ -10
Î³(l5N).

S G +1 0-110-1

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