Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, United Kingdom.
Phys Rev Lett. 2009 Oct 30;103(18):183201. doi: 10.1103/PhysRevLett.103.183201. Epub 2009 Oct 28.
We show that sympathetic cooling of NH molecules by Mg atoms has a good prospect of success. We carry out calculations on M-changing collisions of NH (3Sigma-) molecules in magnetically trappable states with Mg, using a recently calculated potential energy surface. We show that elastic collision rates are much faster than inelastic rates for a wide range of fields at temperatures up to 10 mK and that the ratio increases for lower temperatures and magnetic fields.
我们表明，通过镁原子对 NH 分子进行的交感冷却具有很好的成功前景。我们使用最近计算出的势能表面，对在磁场中可捕获状态下的 NH（3Sigma-）分子与镁的 M 变化碰撞进行了计算。我们表明，在高达 10mK 的温度范围内，弹性碰撞速率比非弹性碰撞速率快得多，并且对于较低的温度和磁场，该比值会增加。
