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The vibrational spectra of water clusters in the gas phase are calculated by using Ab initio calculation and molecular dynamics. The result reveals that the non-chiral water molecules have circular dichroism (CD) effect due to the hydrogen bondings between the molecules. Strong absorption and circular dichroism have been observed in THz range.
Summary form only given. CRLAS was developed in 1988 for spectroscopic applications by O'Keefe and Deacon. We have utilized this new approach to measure electronic spectra of laser-generated metal clusters, metal silicides, and infrared spectra of stable molecules and water clusters. A scan of a vibrational band of the water pentamer is shown. Theoretical considerations and some applications are discussed.
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