Mouloudakis, K.Bodenstedt, S.Azagra, MarcMitchell, M. W.Marco Rius, IreneTayler, Michael C. D.2024-01-232024-01-302023-01-301948-7185https://hdl.handle.net/2445/206206We introduce a method for nondestructive quantification of nuclear spin polarization, of relevance to hyperpolarized spin tracers widely used in magnetic resonance from spectroscopy to in vivo imaging. In a bias field of around 30 nT we use a high-sensitivity miniaturized 87Rb-vapor magnetometer to measure the field generated by the sample, as it is driven by a windowed dynamical decoupling pulse sequence that both maximizes the nuclear spin lifetime and modulates the polarization for easy detection. We demonstrate the procedure applied to a 0.08 M hyperpolarized [1-13C]-pyruvate solution produced by dissolution dynamic nuclear polarization, measuring polarization repeatedly during natural decay at Earth's field. Application to real-time and continuous quality monitoring of hyperpolarized substances is discussed.24 p.application/pdfeng(c) American Chemical Society, 2023Ressonància magnèticaSpin (Física nuclear)Magnetic resonanceNuclear spininfo:eu-repo/semantics/article2024-01-23info:eu-repo/semantics/openAccess657542536715634