Ultra-Low-Field NMR Relaxation and Diffusion Measurements Using an Optical Magnetometer
Paul J. Ganssle, Hyun D. Shin, Scott J. Seltzer, Vikram S. Bajaj, Micah P. Ledbetter, Dmitry Budker, Svenja Knappe, John Kitching, and Alexander Pines
a) T1–T2 and b) T2-diffusion Laplace pseudospectra of decane and water. The extra peak in the T2-diffusion spectrum is an artifact of the inversion procedure used. The colors in the figure correspond to relative intensity, normalized to 100.
ABSTRACT
Nuclear magnetic resonance (NMR) relaxometry and diffusometry are important tools for the characterization of heterogeneous materials and porous media, with applications including medical imaging, food characterization and oil- well logging. These methods can be extremely effective in applications where high-resolution NMR is either unnecessary, impractical, or both, as is the case in the emerging field of portable chemical characterization. Here, we present a proof- of-concept experiment demonstrating the use of high-sensitivity optical magnetometers as detectors for ultra-low-field NMR relaxation and diffusion measurements.
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