free induction decay การใช้

• This signal is called the free induction decay ( FID ).
• In 1D NMR, the scalar coupling leads to oscillations in the free induction decay as well as splittings of lines in the spectrum.
• This microwave signal generated by the rotating magnetization vector is called free induction decay ( FID ) ( see page 175 of ref ).
• In Fourier transform ion cyclotron resonance and Orbitrap type mass spectrometers the signal intensity ( Y-axis ) is related to the amplitude of the free induction decay signal.
• Consider a single pulse sequence consisting of ( 1 ) an excitation pulse with flip angle \ theta _ E, ( 2 ) the recording of the time domain signal ( Free induction decay, FID ) for a duration known as acquisition time a _ t, and ( 3 ) a delay until the next excitation pulse ( here called interpulse delay d _ 1 ).