超冷铯分子0+u（6P3/2）长程态的高灵敏光缔合光谱研究∗

摘要

Photoassociation spectroscopy with high resolution for 0+u (6P3/2) long-range state of ultracold cesium molecules has been measured experimentally using the modulated trap loss fluorescence spectroscopy technology. The spectral range has been extended over 60 cm−1 below the 6S1/2 +6P3/2 dissociation limit as compared with other groups. twenty-five new observations of the Cs2 0+u in long-range state are reported. The vibrational binding energies of these states are analyzed by using the LeRoy–Bernstein formula. The long-range parameter C3 in molecular 0+u (6P3/2) state is derived for 16.103 ± 0.010, and the corresponding molecular potential curve is depicted.%利用发展的调制俘获损耗荧光光谱技术实验测量了超冷铯分子0+u (6P3/2)长程态的高灵敏光缔合光谱.光谱探测范围较国际已有报道扩大了60 cm−1,观察到25个长程区域新的振动能级.通过LeRoy-Bernstein公式对振动束缚能数据进行拟合,获得了超冷铯分子0+u (6P3/2)态的长程系数C3为16.103±0.010.构建了超冷铯分子0+u (6P3/2)态长程区域的势能曲线.