James Ball1, Jim M. Wild1, and Graham Norquay1
1POLARIS, Department of Infection, Immunity and Cardiovascular Disease, The University of Sheffield, Sheffield, United Kingdom
1POLARIS, Department of Infection, Immunity and Cardiovascular Disease, The University of Sheffield, Sheffield, United Kingdom
- Rb density varies significantly depending upon incident photon flux and Rb source distribution in the cell.
- Required presaturator length longer than previously predicted due to the higher flow rates employed by high-throughput polarisers.
Fig. 1: (A) CAD drawings of the SEOP cells for different Rb source-sink distributions (highlighted): (i) the SEOP cell with a Rb pool located near the inlet; (ii) the SEOP cell with Rb on all internal surfaces of the cell, and (iii) the SEOP cell with Rb located in the presaturator. (B) Corresponding normalised Rb density distributions, [Rb]/[Rb]sat, for laser power =160W and gas flow rate =2000sccm. Rb density is normalised to the saturation density given by the Killian formula, [Rb]sat=2.70x1013cm-3.
Fig. 5: (a) Normalised Rb density, [Rb]/[Rb]sat, versus position along the presaturator for a gas flow rate of 900sccm (blue), 1100sccm (orange), 1400sccm (yellow), 1700sccm (purple) and 2000sccm (green). (b) Length of presaturator required for [Rb]=0.99*[Rb]sat versus flow rate. The presaturator is cylindrical, with a diameter of 6mm and length of 73.1cm. The Rb source covers 25% of the total internal surface area of the presaturator.
