Magnetic decoupling of {sup 129}Xe-Rb and {sup 129}Xe-Cs binary spin exchange
Magnetic decoupling of {sup 129}Xe-Rb and {sup 129}Xe-Cs binary spin exchange
复制标题
{sup 129}Xe-Rb 和 {sup 129}Xe-Cs 二元自旋交换的磁解耦
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
W. Happer
中科院分区：
文献类型：
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作者：
Y. Jau;N. Kuzma;W. Happer
我们报告了由气体中的 Rb 或 Cs 原子二元碰撞引起的 {sup 129}Xe 原子核自旋弛豫率的磁解耦计算。半经典近似使用经典路径进行碰撞并以量子力学方式处理自旋相互作用，其结果与扭曲波玻恩近似的计算结果相差不超过 2%。两种计算方法都表明，对于几十特斯拉的磁场，弛豫率大幅降低。对于{sup 129}Xe-Rb，在最近的实验测量可用的情况下，在9.4T实验场下计算的速率系数约为零场下计算值的80%。在 9.4 T 时，计算出的 {sup 129}Xe-Rb 速率系数约为实验观测值的二分之一。这种差异可能是由于计算中使用的范德华和自旋相关势的不准确造成的。
We report calculations of the magnetic decoupling of the nuclear spin relaxation rate of {sup 129}Xe atoms caused by binary collisions with Rb or Cs atoms in a gas. A semiclassical approximation, using a classical path for the collision and treating the spin interactions quantum mechanically, gives results that differ by no more than 2% from calculations with the distorted-wave Born approximation. Both computational methods show that the relaxation rate decreases substantially for magnetic fields of a few tens of teslas. For {sup 129}Xe-Rb, where recent experimental measurements are available, the calculated rate coefficients at the experimental field of 9.4 T are about 80% of the calculated values at zero field. At 9.4 T, the calculated rate coefficient for {sup 129}Xe-Rb is about one-half of the experimentally observed value. This discrepancy is probably due to inaccuracies in the van der Waals and spin-dependent potentials used in the calculations.
影响因子：
19.7
作者：
MacFall, JR;Charles, HC;Ravin, CE
通讯作者：
Ravin, CE