التفاصيل البيبلوغرافية
| العنوان: |
Changes in the structure of water deduced from the pressure dependence of the Raman OH frequency. |
| المؤلفون: |
Tatsuhiko Kawamoto, V., Shukichi Ochiai, V., Hiroyuki Kagi |
| المصدر: |
Journal of Chemical Physics; 4/1/2004, Vol. 120 Issue 13, p5867-5870, 4p, 4 Graphs |
| مصطلحات موضوعية: |
RAMAN effect, HIGH temperatures, HYDROGEN bonding, WATER, SPECTRUM analysis, PRESSURE |
| مستخلص: |
We report on the Raman spectra of water under high temperature and pressure conditions and show a discontinuity in the pressure dependence of the OH stretching frequency. As pressure increases, the strength of hydrogen bonding increases rapidly in the pressure ranges up to 0.4±0.1 GPa at 25 °C, 1.0±0.1 GPa at 100 °C, and 1.3±0.1 GPa at 300 °C and slowly above these pressures. This finding clearly demonstrates the existence of discontinuities in the pressure response of the hydrogen bonds of water, which suggests a possible structural change under these conditions. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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