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  • Title: Measurements of magnetic field stability in inhomogeneous magnetic fields at low temperature.
    Author: Hugon C, Jacquinot JF, Sakellariou D.
    Journal: J Magn Reson; 2010 Jan; 202(1):1-8. PubMed ID: 19884026.
    Abstract:
    We present an original method for field stability measurements in a bath of liquid helium. This method is used to validate the power supply of a superconductive magnet operating in driven mode. The experiment consists in the measurement of the NMR signal of a sample of liquid (3)He, placed inside the field of a test magnet driven by a power supply. The homogeneity of the magnet is a strongly limiting factor for measurements but through the use of an inductively coupled microcoil and careful signal processing, a precision of 5.5 ppm was achieved.
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