Photolysis Of H2O2-H2O Mixtures: The Destruction Of H2O2

Details Photolysis Of H2O2-H2O Mixtures: The Destruction Of H2O2 Photolysis Of H2O2-H2O Mixtures: The Destruction Of H2O2

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.4403l&link_type=abstract

American Astronomical Society, DPS meeting #40, #44.03; Bulletin of the American Astronomical Society, Vol. 40, p.478

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Numerous laboratory studies have shown that small, but easily detectable, amounts of hydrogen peroxide can be formed by irradiating water ice with many different types of energetic particles. Thus it seems likely that hydrogen peroxide would be a common component detected in the outer solar system, as both water ice and radiation are almost everywhere. However, hydrogen peroxide has only been observed in the reflectance spectra of a few objects.
One possibility for the lack of hydrogen peroxide is that UV photons > 180 nm, which are not absorbed by H2O, preferentially destroy H2O2 that may have formed from Lyman-alpha or other ionizing radiation. To test this hypothesis, we will present data on the photodestruction rates of H2O2 in H2O mixtures using UV photons (193 nm) and discuss possible implications for outer solar system bodies. This work is being funded by NASA Outer Solar System Program

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