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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
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 Feshbach molecules, we produce deeply bound triplet 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 states and, remarkably, below universality for the state. We also observe a strong rotational state dependence of the 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 Feshbach分子,我们产生深结合的三重态 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。 的状态,并且显着地低于普遍性 州。我们还观察到反应速度。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
中文翻译:
Li62二聚体的量子态依赖化学
从超冷合奏开始 Feshbach分子,我们产生深结合的三重态 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。 的状态,并且显着地低于普遍性 州。我们还观察到反应速度。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。