期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 13, 期 4, 页码 1297-1300出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cp02311f
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资金
- Natural Sciences and Engineering Research Council of Canada
In spite of wide interest in CO2 clusters, only dimers and trimers have previously been assigned to specific infrared bands. Here, transitions for clusters with 6-13 molecules are identified in the nu(3) region (similar to 2350 cm(-1)). Spectra are observed in a supersonic jet (T similar to 2.5 K) using a tunable laser probe, and analyzed with the aid of cluster calculations based on a widely-used model potential. Vibrational origins show blue-shifts significantly larger than predicted by resonant dipole interactions.
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