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 'Adiabatic Fast Passage' 
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Adiabatic Fast Passage
 
(AFP) Adiabatic fast passage is a NMR technique of producing rotation of the macroscopic magnetization vector by shifting the frequency of RF energy pulses (or the strength of the magnetic field) through resonance (the Larmor frequency) in a time short compared to the relaxation times. Particularly used for inversion of the spins between high and low energy states with an excess of spins in the higher energy level. A continuous wave NMR technique used in e.g., MR spectroscopy.
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    • Boltzmann Distribution
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    • Adiabatic Radio Frequency Pulses
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Further Reading:
  Basics:
Adiabatic theorem
   by en.wikipedia.org    
  News & More:
New theory of adiabaticity developed
Tuesday, 2 December 2008   by www.upi.com    
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Adiabatic Rapid Passage
 
See Adiabatic Fast Passage.
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Further Reading:
  Basics:
Adiabatic theorem
   by en.wikipedia.org    
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InversionForum -
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A nonequilibrium state in which the macroscopic magnetization vector is oriented opposite to the magnetic field;; usually produced by adiabatic fast passage or 180° RF pulses.
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