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arXiv · physics/0411163

NMR detection with an atomic magnetometer

I. M. Savukov·M. V. Romalis
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Abstract

We demonstrate detection of NMR signals using a non-cryogenic atomic magnetometer and describe several novel applications of this technique. A water free induction decay (FID) signal in a 0.5 $μ$T field is detected using a spin-exchange-relaxation-free K magnetometer and the possibility of using a multi-channel magnetometer for 3-D MRI requiring only a single FID signal is described. We also demonstrate detection of less than $10^{13}$ $^{129}$Xe atoms whose NMR signal is enhanced by a factor of 540 due to Fermi-contact interaction with K atoms. This technique allows detection of less than $10^{9}$ $^{129}$Xe spins in a flowing system suitable for remote NMR applications.

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I. M. Savukov, M. V. Romalis. 2004-11-17. NMR detection with an atomic magnetometer. https://doi.org/10.1103/physrevlett.94.123001

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