Bai Suying, Han Xiaoxuan, Bai Jingxu, Jiao Yuechun, Wang Huihui, Zhao Jianming, Jia Suotang
State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China.
J Chem Phys. 2020 Feb 28;152(8):084302. doi: 10.1063/1.5132993.
We present an experimental observation of 37D + 6SCs Rydberg-ground molecules by employing a two-photon photoassociation method. Two distinct Rydberg-ground molecular signals, deep and shallow bound molecules, are observed at the red detuning of atomic line. In theory, the model of scattering interaction between the Rydberg electron and ground-state atom is used to simulate the experiments. Two potential energy curves with energy minimum, deep pure triplet Σ and shallow hyperfine-mixed singlet-triplet Σ potentials, refer to the attained Rydberg-ground molecular signals, respectively. Calculations of the binding energy of triplet Σ and mixed Σv = 0 states are compared with the measurements. The agreement between the calculated and measured values of the binding energy yields zero-energy scattering lengths a (0) = -19.2a and a (0) = -1.3a, respectively.
我们通过采用双光子光缔合方法，对37D + 6SCs里德堡基态分子进行了实验观测。在原子线的红失谐处观察到了两种不同的里德堡基态分子信号，即深束缚分子和浅束缚分子。理论上，利用里德堡电子与基态原子之间的散射相互作用模型来模拟实验。两条具有能量最小值的势能曲线，即深纯三重态Σ和浅超精细混合单重态 - 三重态Σ势能曲线，分别对应于所获得的里德堡基态分子信号。将三重态Σ和混合Σv = 0态的结合能计算值与测量值进行了比较。结合能计算值与测量值之间的一致性分别给出了零能量散射长度a(0) = -19.2a和a(0) = -1.3a。
