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Production of Hyperpolarized 129Xe Using Spin Exchange Optical Pumping

We present a constructed setup for polarizing 129Xe noble gas. Hyperpolarized 129Xe has been obtained via spin exchange with an optically pumped rubidium vapor. Optical pumping is based on polarizing the valence electron of rubidium by the resonant absorption of a circularly polarized laser light. The magnetic field of 30 G was used for obtaining 129Xe polarization. The apparatus for detecting polarization is a nuclear magnetic resonance spectrometer. The highest 129Xe polarization of 54% has been obtained using 60 W circularly polarized laser light with wavelength of 794.7 nm. The measured longitudinal relaxation time of the hyperpolarized 129Xe was 72.3 minutes.