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Quantum-state-dependent chemistry of ultracoldLi62dimers
Physical Review A ( IF 2.9 ) Pub Date : 2020-07-13 , DOI: 10.1103/physreva.102.013310
Gene Polovy , Erik Frieling , Denis Uhland , Julian Schmidt , Kirk W. Madison

Starting from an ultracold ensemble of 6Li2 Feshbach molecules, we produce deeply bound triplet a(13Σu+) molecules in a single quantum state by stimulated Raman adiabatic passage. The ensemble lifetime is found to be limited by two-body molecule-molecule collisions that depend on both the vibrational and rotational states. The loss rate observed is near the universal rate for the |v=0,5,8;N=0,2 states and, remarkably, below universality for the |v=9,N=0 state. We also observe a strong rotational state dependence of the v=9 reaction rate. Consistent with theoretical predictions, we observe that molecules in the absolute lowest triplet level are unstable and likely decay due to trimer formation.

中文翻译:

Li62二聚体的量子态依赖化学

从超冷合奏开始 62 Feshbach分子,我们产生深结合的三重态 一种1个3Σü+分子通过受激拉曼绝热通道处于单个量子状态。发现整体寿命受到取决于振动和旋转状态的两体分子-分子碰撞的限制。观察到的损失率接近普遍损失。|v=058;ñ=02 的状态,并且显着地低于普遍性 |v=9ñ=0州。我们还观察到v=9反应速度。与理论预测一致,我们观察到绝对最低三重态水平的分子是不稳定的,并且可能由于三聚体的形成而衰减。
更新日期:2020-07-13
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