The absorption coefficient of the liquid N2 2.15-micron band and application to Triton

Details The absorption coefficient of the liquid N2 2.15-micron band and application to Triton The absorption coefficient of the liquid N2 2.15-micron band and application to Triton

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991icar...93..169g&link_type=abstract

Icarus (ISSN 0019-1035), vol. 93, Sept. 1991, p. 169-173.

Astronomy and Astrophysics

Astronomy

5

Absorptivity, Infrared Spectra, Liquid Nitrogen, Surface Temperature, Triton, Astronomical Spectroscopy, Grain Size, Temperature Dependence

Scientific paper

The present measurements of the temperature dependence exhibited by the liquid N2 2.15-micron 2-0 collision-induced band's absorption coefficient and integrated absorption show the latter to be smaller than that of the N2 gas, and to decrease with decreasing temperature. Extrapolating this behavior to Triton's nominal surface temperature yields a new estimate of the N2-ice grain size on the Triton south polar cap; a mean N2 grain size of 0.7-3.0 cm is consistent with grain growth rate calculation results.

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