H2O on Io? IR spectra of SO2/H2O mixed ices in the 5000-450 cm-1 region

Details H2O on Io? IR spectra of SO2/H2O mixed ices in the 5000-450 cm-1 region H2O on Io? IR spectra of SO2/H2O mixed ices in the 5000-450 cm-1 region

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.236..125d&link_type=abstract

Astrophysics and Space Science, Volume 236, Issue 1, pp.125-133

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

Laboratory transmission IR spectra of relatively thick films (up to ˜500 μm) of mixed H2O and SO2 ices were measured at several temperatures between 10 and 130 K in the range 5000-450 cm-1. In addition to the strong features due to crystalline SO2 the spectra reveal bands at ˜3668 cm-1, 3634 cm-1 (with some structure) and 3300 cm-1 which are identified with H2O in SO2 environment. Also, there is no overlap between any of the H2O bands with the 3584 cm-1 band of SO2 at any temperature in the above range. The implication of this result is that H2O, if present on Io, must be far less than 1 part in 105 SO2.

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