Background-Free Detection of Spin-Exchange Dynamics at Ultra-Low Magnetic Field.

ABSTRACT: Ultra-low field nuclear magnetic resonance spectroscopy (NMR) and imaging (MRI) inherently suffer from a low signal-to-noise ratio due to the small thermal polarization of nuclear spins. Transfer of polarization from a pre-polarized spin system to a thermally polarized spin system via the Spin Polarization Induced Nuclear Overhauser Effect (SPINOE) could potentially be used to overcome this limitation. SPINOE is particularly advantageous at ultra-low magnetic field, where the transferred polarization can be several orders of magnitude higher than thermal polarization. Here we demonstrate direct detection of polarization transfer from highly polarized ¹²⁹ Xe gas spins to ¹ H spins in solution via SPINOE. At ultra-low field, where thermal nuclear spin polarization is cl

SUBMITTER: Kelley M 

PROVIDER: S-EPMC11017664 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature