论文标题
CO2-RG2和CO2-RG-HE三聚体（RG = NE，AR，KR和XE）的光谱：分子间二氧化碳，振动偏移和三体效应
Spectra of CO2-Rg2 and CO2-Rg-He trimers (Rg = Ne, Ar, Kr, and Xe): intermolecular CO2 rock, vibrational shifts and three-body effects
论文作者
论文摘要
使用高分辨率（0.002 cm-1）红外光谱仪研究CO2 NU3基本频带（〜2350 cm-1）的弱结合的CO2-RG2三聚体，使用可调的OPO探测脉冲脉冲超音速SLIT STLITS STLIT SLIT膨胀，并在此处均有2k。CO2-AR2光谱，但在此处均已报告，但在此之前，均已报告了2K。以及新的组合和热带乐队。对于KR和XE，使用统一的缩放参数方案来说明许多可能的同位素物种。将CO2-RG2三聚体的振动偏移与CO2-RG二聚体的振动移位进行了比较，并且在所有情况下，三聚体移位比从二聚体的线性外推的基础上要比预期的略高于预期。组合带直接测量分子间振动模式（CO2岩石），对于CO2 -AR2，-KR2和-XE2的值约为32.2、33.8和34.7 cm -1的值。将用于CO2-RG2三聚体的结构参数与CO2-RG和RG2二聚体的结构参数进行比较。还报道了混合三聚体CO2-RG的光谱。
Weakly-bound CO2-Rg2 trimers are studied by high resolution (0.002 cm-1) infrared spectroscopy in the region of the CO2 nu3 fundamental band (~2350 cm-1), using a tunable OPO to probe a pulsed supersonic slit jet expansion with an effective rotational temperature of about 2 K. CO2-Ar2 spectra have been reported previously, but are extended here to include Rg = Ne, Kr, and Xe as well as new combination and hot bands. For Kr and Xe, a unified scaled parameter scheme is used to account for the many possible isotopic species. Vibrational shifts of CO2-Rg2 trimers are compared to those of CO2-Rg dimers, and in all cases the trimer shifts are slightly more positive (blue-shifted) than expected on the basis of linear extrapolation from the dimer. Combination bands directly measure an intermolecular vibrational mode (the CO2 rock), and gives values of about 32.2, 33.8, and 34.7 cm-1 for CO2-Ar2, -Kr2, and -Xe2. Structural parameters derived for CO2-Rg2 trimers are compared with those of CO2-Rg and Rg2 dimers. Spectra of the mixed trimers CO2-Rg-He are also reported.
