Polarization of 3He by spin exchange with optically pumped Rb and K vapors
Polarization of 3He by spin exchange with optically pumped Rb and K vapors
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DOI：
10.1103/physrevlett.80.2801
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发表时间：
1998-03-30
影响因子：
8.6
通讯作者：
Happer, W
中科院分区：
文献类型：
--
作者：
Baranga, ABA;Appelt, S;Happer, W
我们报告了大量的实验测量的关键率，确定的效率极化核的He-3的自旋交换与光泵Rb蒸汽。与最近的理论预测一致，我们发现由于（HeRb）-He-3碰撞的电子自旋损失率具有很强的温度依赖性。我们还发现，He-3的自旋交换极化的K的最大可能的效率是10倍以上的Rb。
We report on extensive experimental measurements of the key rates that determine the efficiency for polarizing the nuclei of He-3 by spin exchange with optically pumped Rb vapor. In agreement with recent theoretical predictions, we find a strong temperature dependence of the electron-spin loss rates due to (HeRb)-He-3 collisions. We also find that the maximum possible efficiency for spin-exchange polarization of He-3 by K is 10 times greater than for Rb.