Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA.
J Chem Phys. 2013 Nov 7;139(17):174316. doi: 10.1063/1.4826653.
We report new results on the spectroscopy of the 3 (3)Σ(+) electronic state of (39)K(85)Rb. The observations are based on resonance-enhanced multiphoton ionization of ultracold KRb molecules starting in vibrational levels v'' = 18-23 of the a (3)Σ(+) state and ionized via the intermediate 3 (3)Σ(+) state. The a-state ultracold molecules are formed by photoassociation of ultracold (39)K and (85)Rb atoms to the 3(0(+)) state of KRb followed by spontaneous emission. We discuss the potential applications of this state to future experiments, as a pathway for populating the lowest vibrational levels of the a state as well as the X state.
我们报告了 (39)K(85)Rb 的 3 (3)Σ(+)电子态光谱的新结果。这些观测是基于从 a (3)Σ(+)态的振动态 v'' = 18-23 开始的超冷 KRb 分子的共振增强多光子电离，并通过中间 3 (3)Σ(+)态进行电离。a 态超冷分子是通过超冷 (39)K 和 (85)Rb 原子的光缔合到 KRb 的 3(0(+))态，然后自发辐射形成的。我们讨论了这种状态在未来实验中的潜在应用，作为将 a 态和 X 态的最低振动能级填充的途径。
