论文标题
三维自旋光学泵单元的流体和热动力学分析
Fluid and Thermal Dynamical Analysis of Three-Dimensional Spin-Exchange Optical Pumping Cells
论文作者
论文摘要
我们介绍了用于使用流式偏光剂设计的$^{129} $ XE的自旋交换光学泵送的常见细胞几何形状中流体动力学，热动力学和碱扩散的有限分析。该分析是第一个模拟在某些光学泵单元中观察到的激光逃跑效应方面的方面。该分析进一步表明，出口管中的高温气体可能会导致高浓度的碱蒸气引起的快速去极化。最后，分析表明碱数密度分布和动力学的细节高度依赖于碱金属在光学泵浦部分和细胞的出口管中的分布。
We present a finite-element analysis of the fluid dynamics, thermal dynamics, and alkali diffusion in a common cell geometry used for spin-exchange optical pumping of $^{129}$Xe using a flow-through polarizer design. The analysis is the first to simulate aspects of the laser run-away effect observed in some optical pumping cells. The analysis further suggests that high-temperature gas in the outlet tube may give rise to rapid depolarization due to high concentrations of alkali vapor. Finally, the analysis indicates that the alkali number density distribution and the specifics of the dynamics are highly dependent upon the the distribution of the alkali metal in the optical pumping portion and outlet tube of the cell.
