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has been cited by the following article:

• TITLE: The Spin Transition and Susceptibility of NMR Samples in a Time Dependent Longitudinal Field

  AUTHORS: Yifan Hu, Hong Ma, Jinbo Li, Bin Xu

  KEYWORDS: NMR Probe; Spin Transition; Susceptibility; Time Dependent Longitudinal Field

  JOURNAL NAME: Journal of Modern Physics, Vol.3 No.11, November 16, 2012

  ABSTRACT: To construct pulsed high magnet, with rapid adjustments to large changes in the field strength, it is a mandatory acces-sory to development a special NMR probes to provide a precise real-time map of the magnetic field. In order to do so, it is necessary to understand the variations of the spin transition and susceptibility of NMR samples in a time dependent longitudinal field. This work analyzes the effect on the spin transition by a time dependent longitudinal field. For a 1/2 spin system, we have derived a simple formula for the prediction of the probabilities of occupation of the 1/2 and ?1/2 states in a non-static field. We also calculate the magnetic susceptibility of the water and give an analysis of the effect on the magnetic susceptibility in a time dependent longitudinal field and RF frequency.