New Optical Constants of Amorphous and Crystalline H2O-ice, 3-20 micrometers

Details New Optical Constants of Amorphous and Crystalline H2O-ice, 3-20 micrometers New Optical Constants of Amorphous and Crystalline H2O-ice, 3-20 micrometers

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmmr13a1700m&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #MR13A-1700

Physics

Geophysics

6020 Ices

Scientific paper

We will present new optical constants for the amorphous and crystalline H2O-ice in the spectral range 3-20 μm. Our new measurements provide high temperature resolution for crystalline H2O-ice, 10 K intervals from 20-150 K, including temperatures relevant to Solar System ices. We have found that the shape of the 3 μm feature in amorphous H2O-ice is strongly dependant on deposition temperature and the high and low density phases of amorphous H2O-ice are not easily distinguishable. We will present methods of measuring the change in band shape with phase and temperature. We acknowledge financial support from the NASA Origins of the Solar System Program and the NASA Planetary Geology and Geophysics Program.

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