1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

NMR Q: Why an RF pulse can rotate Mz so fast

  1. Sep 17, 2008 #1
    Learning about Nuclear Magnetic Resonance for a while.

    I have read than when the main field B0 is applied along the Z axis, it takes a time (T1) in the order of seconds for the M0 field to be created in the body we are studying.

    Yet we can apply a short (maybe in the order of one wave length) RF pulse and get all that M0 rotated into the X-Y plane, in no time.

    I don't understand the mechanism why this is possible.

    If M0 were to rotate into the X-Y plane because of the variable B created by the RF pulse, then it would take also around T1 time.

    Yet another question: the B of the RF field is variable, how can it rotate M0 into the X-Y axis.



    NMR Q: Why an RF pulse can rotate Mz so fast
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted