| Autor: |
Tao, Yu Heng, Dai, Xiangyu, Moggach, Stephen A., Clode, Peta L., Fitzgerald, Anthony J., Hodgetts, Stuart I., Harvey, Alan R., Wallace, Vincent P. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 6/7/2024, Vol. 160 Issue 21, p1-10, 10p |
| Abstrakt: |
Here, we report the frequency-dependent spectrum of ice Ih in the range of 0.2–2 THz. We confirm the presence of a feature that blue-shifts from around 1.55–1.65 THz with a decreasing temperature from 260 to 160 K. There is also a change in the trend of the refractive index of ice corresponding to a dispersion, which is also around 1.6 THz. The features are reproduced in data acquired with three commercial terahertz time-domain spectrometers. Computer-simulated spectra assign the feature to lattice translations perpendicular to the 110 and 1 ̄ 10 planes of the ice Ih crystal. The feature's existence should be recognized in the terahertz measurements of frozen aqueous solution samples to avoid false interpretations. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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