Bonsoir à tous,
Voilà j'ai cet exercice de RMN que je n'arrive pas à résoudre. Si vous avez quelques pistes pour m'aider, je vous en serez reconnaisant :)
For a heteronuclear two-spin system, where both spins are spin-1/2 (for example, 1H
and 13C), what pulse sequence would you use to achieve the following overall
transformations?
Iz + Sz →!→2IzSx − Sx
a. Describe the pulse sequence by drawing it (along the lines of the figures in Ch. 7
of Keeler). Be sure to indicate the phase of each pulse.
b. Write down the evolution of the density operator using the ‘arrow notation’
introduced in Eq. (7.10) of Keeler.
(Hint: use a combination of 90° pulses and a ‘spin-echo’ building block similar to
those in Fig. 7.14.)
Voilà j'ai cet exercice de RMN que je n'arrive pas à résoudre. Si vous avez quelques pistes pour m'aider, je vous en serez reconnaisant :)
For a heteronuclear two-spin system, where both spins are spin-1/2 (for example, 1H
and 13C), what pulse sequence would you use to achieve the following overall
transformations?
Iz + Sz →!→2IzSx − Sx
a. Describe the pulse sequence by drawing it (along the lines of the figures in Ch. 7
of Keeler). Be sure to indicate the phase of each pulse.
b. Write down the evolution of the density operator using the ‘arrow notation’
introduced in Eq. (7.10) of Keeler.
(Hint: use a combination of 90° pulses and a ‘spin-echo’ building block similar to
those in Fig. 7.14.)
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