镱原子的双色光缔合光谱及s波散射长度的精确测定
Two-color photoassociation spectroscopy of ytterbium atoms and the precise determinations of s-wave scattering lengths
摘要：
通过进行高分辨率的双色光缔合光谱，我们已经成功地确定了几个最后的束缚态的homopolymer二聚体的六种不同的镱同位素的结合能。这些光谱数据与基于简单模型势的理论计算非常一致，该模型势非常精确地预测了所有28对7种稳定同位素的s波散射长度。相同同位素的两个原子碰撞的s波散射长度分别为：~（168）Yb = 13.33（18）nm，~（170）Yb = 3.38（11）nm，~（171）Yb =-0.15（19）nm，~（171）Yb =-31.7对于^{172}Yb为10.55（11）nm，对于^{174}Yb为5.55（8）nm，对于^{176}Yb为-1.28（23）nm。Yb_2分子的长程范德华势超前项系数为C_6=1932（30）原子单位（$(E_h a_0^6 \approx 9.573\times 10^{-26}$ J nm ^[6]）。
英文摘要：
By performing high-resolution two-color photoassociation spectroscopy, we have successfully determined the binding energies of several of the last bound states of the homonuclear dimers of six different isotopes of ytterbium. These spectroscopic data are in excellent agreement with theoretical calculations based on a simple model potential, which very precisely predicts the s-wave scattering lengths of all 28 pairs of the seven stable isotopes. The s-wave scattering lengths for collision of two atoms of the same isotopic species are 13.33(18) nm for ^{168}Yb, 3.38(11) nm for ^{170}Yb, -0.15(19) nm for ^{171}Yb, -31.7(3.4) nm for ^{172}Yb, 10.55(11) nm for ^{173}Yb, 5.55(8) nm for ^{174}Yb, and -1.28(23) nm for ^{176}Yb. The coefficient of the lead term of the long-range van der Waals potential of the Yb_2 molecule is C_6=1932(30) atomic units $(E_h a_0^6 \approx 9.573\times 10^{-26}$ J nm^6).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
