NMR detection with an atomic magnetometer

Details NMR detection with an atomic magnetometer NMR detection with an atomic magnetometer

2004-11-17

arxiv.org/abs/physics/0411163v1

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevLett.94.123001

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 $\mu$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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