Optical constants of organic tholins produced in a simulated Titanian atmosphere - From soft X-ray to microwave frequencies

Details Optical constants of organic tholins produced in a simulated Titanian atmosphere - From soft X-ray to microwave frequencies Optical constants of organic tholins produced in a simulated Titanian atmosphere - From soft X-ray to microwave frequencies

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984icar...60..127k&link_type=abstract

Icarus (ISSN 0019-1035), vol. 60, Oct. 1984, p. 127-137.

Computer Science

312

Planetary Composition, Satellite Atmospheres, Titan, Environment Simulation, Gas Mixtures, Optical Properties, Organic Solids, Refractivity, Thin Films, Saturn, Titan, Satellites, Optical Properties, Organic Materials, X-Rays, Simulations, Atmosphere, Microwaves, Frequencies, Experiments, Gases, Irradiation, Reflectance, Spectra, Comparisons, Aerosols, Albedo, Color, Refractive Index, Interferometry, Polarization, Wavelengths, Infrared, Absorption, Procedure

Scientific paper

As part of a continuing series of experiments on the production of dark reddish organic solids, called tholins, the synthesis from a simulated Titanian atmosphere of a tholin with a visible reflection spectrum similar to that of the high altitude aerosols responsible for the albedo and reddish color of Titan has been reported (C. Sagan et al., 1981, 1982, 1984). The determination of the real (n) and imaginary (k) parts of the complex refractive index of thin films of such tholin prepared by continuous D.C. discharge through a 0.9 N2/0.1 CH4 gas mixture at 0.2 mb are reported. For 250 Å ≤ λ ≤ 1000 μm, n and k have been determined from a combination of transmittance, specular reflectance, interferometric, Brewster angle, and ellipsometric polarization measurements. Values of n and k in the visible range are consistent with deductions made by ground-based and spacecraft observations of Titan.

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