Radiative transition probabilities, lifetimes and dipole moments for the vibrational levels of the X1Sigma+ ground state of 39K85Rb.
Radiative transition probabilities, lifetimes and dipole moments for the vibrational levels of the X1Sigma+ ground state of 39K85Rb.
复制标题
39K85Rb X1Sigma 基态振动能级的辐射跃迁概率、寿命和偶极矩。
DOI：
10.1063/1.1630299
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
W. Stwalley
中科院分区：
文献类型：
--
作者：
W. T. Zemke;W. Stwalley
利用势能曲线（主要基于Amiot和Verges的RKR势[J. Chem. Phys. 112，7068（2000）]）和偶极矩函数（主要基于Park等人[Chem.Phys.257，135（2000）]的从头计算），我们计算了辐射跃迁概率（爱因斯坦A系数），辐射寿命，和偶极矩的期望值，涉及所有的振动水平（几个旋转量子数）的X1 Sigma+基态的39 K85 Rb。我们观察到振动激发能级的辐射寿命大约为10（3）-10（6）秒，在大多数涉及39 K 85 Rb或其同位素的超冷实验中，这太长了。与其他分子（LiH和HF）的比较表明，简单的缩放（A约为mu 2 nu 3约为tau（-1））将预测许多其他异核分子的类似长寿命，例如，红细胞。
Using a potential energy curve (based primarily on the RKR potential of Amiot and Verges [J. Chem. Phys. 112, 7068 (2000)]) and a dipole moment function (based primarily on ab initio calculations of Park et al. [Chem. Phys. 257, 135 (2000)]), we have calculated radiative transition probabilities (Einstein A coefficients), radiative lifetimes, and dipole moment expectation values involving all vibrational levels (for several rotational quantum numbers) of the X1Sigma+ ground state of 39K85Rb. We observe that the radiative lifetimes of vibrationally excited levels, in particular, are approximately 10(3)-10(6) seconds, far too long to be significant in most ultracold experiments involving 39K85Rb or its isotopomers. Comparison with other molecules (LiH and HF) suggests that simple scaling (A approximately mu2nu3 approximately tau(-1)) will predict similarly long lifetimes for many other heteronuclear molecules, e.g., RbCs.