Detection by two-photon ionization and magnetic trapping of cold Rb2 triplet state molecules
Detection by two-photon ionization and magnetic trapping
of cold Rb2 triplet state molecules
复制标题
双光子电离和磁捕获冷 Rb2 三重态分子的检测
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
O. Dulieu
中科院分区：
文献类型：
--
作者：
J. Lozeille;Andrea Fioretti;C. Gabbanini;Y. Huang;H. Pechkis;Dajun Wang;P. Gould;E. Eyler;W. Stwalley;M. Aymar;O. Dulieu
摘要：我们提出了共振增强的详细实验光谱和准确的理论解释。
超冷铷分子的双光子电离
14000–17000 cm-1 跃迁能量范围。二聚体形成于
通过光缔合形成磁光陷阱，然后辐射衰变成a 3Σu+
最低三重态。过程的理论处理，再现了主要特征
光谱的分析考虑了光缔合和衰变步骤，以及通过与 5S + 4D 极限相关的多种中间 gerade 态的共振电离。特别是$(2)^{3}Sigma_{g}^{+}$的v=1能级的能量
首次确定了潜在井。此外，a 3Σu+ 的位置受到严格限制
令人厌恶的墙。最后，磁捕获
证明了处于 a 3Σu+ 态的铷分子。
Abstract.We present detailed experimental spectra and accurate theoretical interpretation of resonance-enhanced
two-photon ionization of ultracold rubidium molecules in the
14000–17000 cm-1 transition energy range. The dimers are formed in a
magneto-optical trap by photoassociation followed by radiative decay into the a 3Σu+
lowest triplet state. The theoretical treatment of the process, which reproduces the main features
of the spectra, takes into account the photoassociation and decay steps as well as the resonant ionization through the manifold of intermediate gerade states correlated to the 5S + 4D limit. In particular, the energy of the v=1 level of the $(2) ^{3}Sigma_{g}^{+}$
potential well has been determined for the first time. In addition, a tight constraint has been put on the position of the a 3Σu+
repulsive wall. Finally, magnetic trapping of
rubidium molecules in the a 3Σu+ state is demonstrated.