Infrared dynamic polarizability of HD+ rovibrational states.
Infrared dynamic polarizability of HD+ rovibrational states.
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HD 振动态的红外动态极化率。
DOI：
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
J.C.J. Koelemeij
中科院分区：
文献类型：
--
作者：
J.C.J. Koelemeij
本文计算了HD（+）1 s σ（g）基态势中振动量子数v = 0-7，转动量子数J = 0，1的振转态的动态极化率。明确计算了涉及其他1 s σ（g）振转态的跃迁对极化率的贡献，而电子跃迁的贡献被准静态处理，部分来自现有数据[R. E.莫斯和L.瓦伦扎诺物理、2002，100，1527]。我们的模型适用于波长>4 μm的情况，并用于评估在实验高分辨率激光光谱学中捕获的HD（+）离子的黑体辐射（BBR）电场引起的能级位移。所得1 s σ（g）振转态的极化率与已有的精确从头算结果一致。结果表明，由于BBR的斯塔克效应是动态的，不能被视为准静态的，通常是在原子离子的情况下。进一步指出动态斯塔克位移具有张量性质，并强烈依赖于电场的极化状态。给出了BBR诱导Stark位移的数值计算结果，表明HD（+）中窄振动光线（~ 10 Hz自然线宽）的Lamb-Dicke光谱只在10（-16）能级受到BBR位移的影响.
A calculation of dynamic polarizabilities of rovibrational states with vibrational quantum number v = 0-7 and rotational quantum number J = 0,1 in the 1sσ(g) ground-state potential of HD(+) is presented. Polarizability contributions by transitions involving other 1sσ(g) rovibrational states are explicitly calculated, whereas contributions by electronic transitions are treated quasi-statically and partially derived from existing data [R. E. Moss and L. Valenzano, Mol. Phys., 2002, 100, 1527]. Our model is valid for wavelengths >4 μm and is used to assess level shifts due to the blackbody radiation (BBR) electric field encountered in experimental high-resolution laser spectroscopy of trapped HD(+) ions. Polarizabilities of 1sσ(g) rovibrational states obtained here agree with available existing accurate ab initio results. It is shown that the Stark effect due to BBR is dynamic and cannot be treated quasi-statically, as is often done in the case of atomic ions. Furthermore it is pointed out that the dynamic Stark shifts have tensorial character and depend strongly on the polarization state of the electric field. Numerical results of BBR-induced Stark shifts are presented, showing that Lamb-Dicke spectroscopy of narrow vibrational optical lines (∼10 Hz natural linewidth) in HD(+) will become affected by BBR shifts only at the 10(-16) level.
分子离子 HD 的精密光谱：塞曼位移的控制
影响因子：
2.9
作者：
D. Bakalov;V. I. Korobov;S. Schiller
通讯作者：
S. Schiller