2. In many MR experiments it is necessary to flip a spin, which is initially along the z-axis, into the x'y' plane byusing an appropriate rf pulse. This is referred to as a '90° or 'n/2' pulse. If the desired rf pulse time interval is1.0ms, what B₁ magnitude in uT (1T = 10,000G) is required fora.a proton spin?b. an electron spin?C. How many Larmor precession cycles take place in the laboratory frame, for B0= 1.0 T, during the n/2 flipof the proton spin?

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Answered: In many MR experiments it is necessary…

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