Laboratory simulations of comet surfaces

Details Laboratory simulations of comet surfaces Laboratory simulations of comet surfaces

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ioch.rept..182s&link_type=abstract

In NASA, Washington, Infrared Observations of Comets Halley and Wilson and Properties of the Grains p 182-183 (SEE N89-13330 04-

Computer Science

Albedo, Carbon, Cometary Atmospheres, Cosmic Dust, Halley'S Comet, Silicon Dioxide, Light Scattering, Reflectance, Stellar Temperature, Surface Properties, Wavelengths

Scientific paper

The geometric albedos of frozen mixtures consisting of colloidal silica and carbon black mixed with water have been measured over the wavelength range of 400 to 800 nm to compare with recent observations of Comet Halley. Data were obtained as a function of sample temperature, scattering angle, and wavelength as the frozen samples warmed to 0 C in vacuum. Scattering from water ice, flat black paint, and Kodak white reflectance paint were also measured. Lab simulations show that the change in albedo of the samples show that sublimation of the water from the sample surface can have a major effect on the albedo of a particle/ice sample in the visible. Such processing may have a marked effect on the visible albedo of comet surfaces as well.

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