Why does the second 90 deg pulse to spin one in the INEPT experiment (Fig 7 15 on page 168) have to be about the y axis Show that changing the phase of the first 90 deg pulse from x to x results in the following observables on the S spin at the start of acquisition ks cos (27J15T2) , ky sin (2nJis T2) sin (2rJrsT1) S

Question: Why does the second 90° pulse to spin one in the INEPT experiment (Fig. 7.15 on page 168) have to be about the y-axis? Show

Why does the second 90° pulse to spin one in the INEPT experiment (Fig. 7.15 on page 168) have to be about the y-axis?
Show that changing the phase of the first 90° pulse from x to -x results in the following observables on the S spin at the start of acquisition:

-ks cos (27J15T2) ,- ky sin (2nJis T2) sin (2rJrsT1) S-

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The pulse sequence for the INEPT experiment is reproduced below from Fig 715 on page 168 At the end ... View full answer

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