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  • Title: Detection of NMR signals with a radio-frequency atomic magnetometer.
    Author: Savukov IM, Seltzer SJ, Romalis MV.
    Journal: J Magn Reson; 2007 Apr; 185(2):214-20. PubMed ID: 17208476.
    Abstract:
    We demonstrate detection of proton NMR signals with a radio-frequency (rf) atomic magnetometer tuned to the NMR frequency of 62 kHz. High-frequency operation of the atomic magnetometer makes it relatively insensitive to ambient magnetic field noise. We obtain magnetic field sensitivity of 7 fT/Hz1/2 using only a thin aluminum shield. We also derive an expression for the fundamental sensitivity limit of a surface inductive pick-up coil as a function of frequency and find that an atomic rf magnetometer is intrinsically more sensitive than a coil of comparable size for frequencies below about 50 MHz.
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