A new DAQ-based and versatile low-cost NMR spectrometer working at very-low magnetic field (4.5 mT): a palette of potential applications

In this paper, we describe the design and development of a new home-built NMR spectrometer working at very-low magnetic field (4.5 mT). This spectrometer allows detection and acquisition of NMR proton (¹H) signals. It consists of a resistive magnetic (Helmholtz coils) that produces the static magnetic field of 4.5 mT. The transmitter and the receiver were built by using available DAQ boards form National Instruments. These boards are controlled using Labview environment. The system is versatile, flexible and easy to replicate. This was actually the underlying idea behind this development. Both ¹H and hyperpolarized ¹²⁹Xe NMR signals were successfully acquired with this low frequency spectrometer. Measurement of the absolute polarization of hyperpolarize ¹²⁹Xe could be performed by this low frequency spectrometer. We discuss finally in this paper some others potential applications.