Water ice at low temperatures and pressures: New Raman results
| Autor: | Vesna Volovšek, Krešimir Furić |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Phase transition
Chemistry Organic Chemistry Doping Analytical chemistry H2O and D2O ice amorphous phase and crystalline phases Ih and XI hydrogen bond ordering Raman spectroscopy Analytical Chemistry Amorphous solid Inorganic Chemistry Atmosphere Crystallography symbols.namesake symbols Solid phases Water ice Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 976:174-180 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/j.molstruc.2010.03.024 |
| Popis: | Within the two types of experiments, both securing high sample’s purity, solid phases of water were studied in the region of low temperatures (above 8 K) and low pressure, conditions similar to the very upper atmosphere. Spectral features characterizing amorphous and crystalline H 2 O and D 2 O ices were recognized in both types of experiments. Careful analyses of the results discovered change of the slope in the temperature dependence of all deconvoluted bands at nearly 84 K for the first time. We attribute this observation to the ice XI ↔ I h phase transition that was previously reported only for doped, not for pure water. |
| Databáze: | OpenAIRE |
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