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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Vibrational spectroscopy of size-selected sodium-doped water clusters
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Vibrational spectroscopy of size-selected sodium-doped water clusters

机译：尺寸选择的钠掺杂水团簇的振动光谱

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The vibrational OH stretch spectra have been measured for Na(H2O), clusters in the size range from n = 8 to 60. The complete size selection is achieved by coupling the UV radiation of a dye laser below the ionization threshold with the tunable IR radiation of an optical parametric oscillator. The spectra are dominated by intensity peaks around 3400 cm(-1) which we attribute to an increased transition dipole moment of delocalized electrons in this type of doped cluster. Aside from the positions of free (3715 cm(-1)) and double donor (3560 cm(-1)) bonds which are known from pure water clusters, specific transitions are observed at 3640 cm(-1) and in the range of the single donor bonds between 3000 and 3200 cm(-1).
机译：已测量了Na（H2O）的振动OH拉伸光谱，簇的尺寸范围为n = 8到60。通过将低于电离阈值的染料激光器的UV辐射与可调的IR辐射耦合，可以实现完整的尺寸选择参量振荡器的示意图。光谱由3400 cm（-1）附近的强度峰主导，我们将其归因于这种类型的掺杂簇中离域电子的跃迁偶极矩增加。除了纯净水簇中已知的自由键（3715 cm（-1））和双供体键（3560 cm（-1））的位置以外，还观察到在3640 cm（-1）范围内的特定跃迁。单个供体键在3000至3200 cm（-1）之间。

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