%0 Journal Article %J Physical Review Letters %D 2012 %T Liquid-State Nuclear Spin Comagnetometers %A Ledbetter, M. P. %A Pustelny, S. %A Budker, D. %A Romalis, M. V. %A Blanchard, J. W. %A Pines, A. %K nmr %X

We discuss nuclear spin comagnetometers based on ultralow-field nuclear magnetic resonance in mixtures of miscible solvents, each rich in a different nuclear spin. In one version thereof, Larmor precession of protons and F-19 nuclei in a mixture of thermally polarized pentane and hexafluorobenzene is monitored via a sensitive alkali-vapor magnetometer. We realize transverse relaxation times in excess of 20 s and suppression of magnetic field fluctuations by a factor of 3400. We estimate it should be possible to achieve single-shot sensitivity of about 5 x 10(-9) Hz, or about 5 x 10(-11) Hz in approximate to 1 day of integration. In a second version, spin precession of protons and Xe-129 nuclei in a mixture of pentane and hyperpolarized liquid xenon is monitored using superconducting quantum interference devices. Application to spin-gravity experiments, electric dipole moment experiments, and sensitive gyroscopes is discussed.

%B Physical Review Letters %V 108 %8 Jun 15 %@ 0031-9007 %G English %U ://WOS:000306342000010 %N 24 %M WOS:000306342000010 %! Liquid-State Nuclear Spin Comagnetometers %R Doi 10.1103/Physrevlett.108.243001