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Apparatus to generate polarization vs. flow curves. It consists of a standard SEOP polarizer that flows directly to an adjacent NMR test bulb housed in a 20 gauss magnetic field where 129Xe polarization is sampled by a low-frequency NMR circuit and digitized using the computer and NMR software. Laser absorption is monitored and quantified using an on-board spectrometer and photodiode. Xenon flow rate through the system is controlled by a needle valve downstream from the test bulb.
