Abstract
The behavior of the isothermal compressibility of pure fluids in the critical region is of special interest because this parameter is related to several important physical properties of fluids in the vicinity of the gas-liquid transition. The determination of the isothermal compressibility can be made from the analysis of classical measurements of thermodynamics (P V T data) in a ränge of temperatures not too close to the critical point. Another way is to use optical methods like the interferometric measurements to determine the density profile, the determination of the turbidity (apparent absorption of the incident light beam), or the intensity of the polarized component of the light scattering which is directly related to the isothermal compressibility according to the Einstein-Smoluchowski relation. In the last case it is very difficult to obtain an accurate measurement of the absolute value of the light intensities, with important geometry corrections.
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© 1979 Springer Science+Business Media New York
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Garrabos, Y., Tufeu, R., Le Neindre, B., Oksengorn, B. (1979). Double Light Scattering — Application to the Determination of the Isothermal Compressibility of Pure Fluids Near Their Critical Point. In: Timmerhaus, K.D., Barber, M.S. (eds) High-Pressure Science and Technology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7470-1_59
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DOI: https://doi.org/10.1007/978-1-4684-7470-1_59
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