Title :
Low magnetic field measurement by NMR using polarized flowing water
Author :
Kim, Cheol G. ; Ryu, Kwon S. ; Woo, Byung C. ; Kim, Chang S.
Author_Institution :
Magnetics Lab., Korea Res. Inst. of Stand. & Sci., Taejon, South Korea
fDate :
11/1/1993 12:00:00 AM
Abstract :
A nuclear magnetic resonance (NMR) experiment using polarized flowing water is performed to measure low magnetic field. The periodic changes of signal amplitude and phase for the increasing applied RF field are ascribed to the sinusoidal variation in the resonance transition. The NMR signal with a good signal-to-noise ratio is demonstrated down to 0.1 mT range to determine the field within the uncertainty of a few tens per million
Keywords :
coils; magnetic field measurement; nuclear magnetic resonance; NMR; applied RF field; low magnetic field measurement; periodic changes; phase; polarized flowing water; resonance transition; signal amplitude; signal-to-noise ratio; sinusoidal variation; Coils; Detectors; Frequency measurement; Magnetic field measurement; Nuclear magnetic resonance; Performance evaluation; Polarization; Protons; RF signals; Radio frequency;
Journal_Title :
Magnetics, IEEE Transactions on
