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Open Questions on Reliable Measurements of Soret Coefficients

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Abstract

This study was motivated by experimental problems arising in the design of optical digital interferometry for measurements of Soret coefficients in laboratory conditions. Our attention is mainly focused on thermal design of the set-up. The goal is to establish a linear temperature profile inside the experimental cell while heating from above. The measures for preventing deleterious convection inside the working liquid and outside the experimental cell (in the surrounding gas) are carefully examined. It is pointed out that both convection in the liquid and in the surrounding gas have a strong negative effect on the quality of optical measurements.

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Authors and Affiliations

  1. MRC, Dept. Chem. Physics, CP 165/62, Brussels University (ULB), av. F.D. Roosevelt 50, 1050, Brussels, Belgium

    Aliaksandr Mialdun & Valentina Shevtsova

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  1. Aliaksandr Mialdun
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  2. Valentina Shevtsova
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Correspondence to Aliaksandr Mialdun.

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Mialdun, A., Shevtsova, V. Open Questions on Reliable Measurements of Soret Coefficients. Microgravity Sci. Technol 21, 31–36 (2009). https://doi.org/10.1007/s12217-008-9088-2

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  • DOI: https://doi.org/10.1007/s12217-008-9088-2

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