کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9727619 | 1480206 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature anomalies of hypersound velocity and specific heat ratio in liquid Quinoline
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
فیزیک ریاضی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temperature anomalies of hypersound velocity and specific heat ratio in liquid Quinoline Temperature anomalies of hypersound velocity and specific heat ratio in liquid Quinoline](/preview/png/9727619.png)
چکیده انگلیسی
Results of an extensive study of dynamic polarized (VV) and depolarized (VH) Rayleigh-Brillouin light scattering in Quinoline as a function of temperature are presented. The VV spectrum is analyzed by taking into account the fine structure (shear dip) of the VH spectrum. The hypersound velocity u(T) and the Landau-Placzek ratio γ(T) have been calculated from the frequency shift of the Brillouin lines and the ratio of the integrated intensities of the non-shifted Rayleigh line to the two Brillouin lines. Under the conditions of high-purity and long equilibration times, the temperature variations of both u(T) and γ(T) show two reproducible anomalies centered at about 17 and 42 °C. We discuss an interpretation of the anomalies based on local structure changes, and possible relations of these anomalies to liquid-liquid phase transitions in equilibrium liquids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 354, 15 August 2005, Pages 34-48
Journal: Physica A: Statistical Mechanics and its Applications - Volume 354, 15 August 2005, Pages 34-48
نویسندگان
Louis Letamendia, Miad Belkadi, Omar Eloutassi, Jacques Rouch, Dino Risso, Patricio Cordero, Alexander Z. Patashinski,