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What is π/2 pulse and π pulse

  1. Oct 16, 2012 #1
    HI,my dear friends! I have find some materials about π/2 pulse and π pulse ,but I still can't understand the "physics" behind these concept! Anyone can shed light on this problem would be highly appreciated!Thank you!
     
  2. jcsd
  3. Oct 17, 2012 #2

    mfb

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    2016 Award

    Staff: Mentor

    The animation at Wikipedia (+precession) shows how they work. Alternatively, take any introduction to NMR and ask for specific parts that are unclear.
     
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