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      Vertical profiles of H2O, H2SO4, and sulfuric acid concentration at 45–75km on Venus

      Icarus
      Elsevier BV

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          Optical Constants of Sulfuric Acid; Application to the Clouds of Venus?

          With the purpose of obtaining the real and imaginary parts of the complex refractive index N; = n + ik, we have made quantitative measurements of spectral transmission and reflection of sulfuric acid solutions in the visible and near infrared. On the basis of the results, we have obtained values for n throughout the entire region and values of k in the near infrared together with upper limits for k in the visible region. These optical constants can be used to interpret the results of polarization studies of solar radiation that has been scattered by the clouds of Venus. We have Kramers-Kronig phase-shift analysis to obtain values of n and k from reflection measurements in the intermediate infrared region (400-4000 cm(-1)). Our measurements were made at 300 K on sulfuric acid solutions having concentrations by weight of 95.6, 84.5, 75, 50, 38, and 25%. If the particles in the Venus clouds consist of liquid droplets of sulfuric acid at a temperature of 250 K, comparison of existing Venus data with our data suggests that the acid concentration is probably higher than 70%. Various possibilities are discussed.
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            Models of the structure of the atmosphere of Venus from the surface to 100 kilometers altitude

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              On the vapor pressure of sulfuric acid

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                Author and article information

                Journal
                Icarus
                Icarus
                Elsevier BV
                00191035
                May 2015
                May 2015
                : 252
                :
                : 327-333
                Article
                10.1016/j.icarus.2015.01.024
                91fd5814-e0c7-4c08-85d4-1a3080f5ce14
                © 2015
                History

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