Figure 4
(a) Maximum attained 129Xe magnetic field for various Xe partial pressures. (b) Maximum attained 129Xe polarization for various Xe partial pressures. In both (a) and (b), data in blue represent Xe gas at natural isotopic abundance (26.4% 129Xe) while data in red represent isotopically enriched Xe gas containing 83% 129Xe. Within the error bars, the maximum polarizations and fields were generally obtained at the highest optical pumping power of 70 mW. Data were obtained in the pump chamber under stopped-flow conditions. In all cases, a N2 partial pressure of 800 Torr was employed. All experiments were conducted at a temperature of approximately 140 °C. A set of data consisting of the fields and polarizations obtained as a function of optical pumping power for each Xe partial pressure is presented in Supplementary Figure 2.
