Infrared Spectra and Radiation Stability of H2O2 Ices Relevant to Europa

Details Infrared Spectra and Radiation Stability of H2O2 Ices Relevant to Europa Infrared Spectra and Radiation Stability of H2O2 Ices Relevant to Europa

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006asbio...6..483h&link_type=abstract

Astrobiology, Volume 6, Issue 3, pp. 483-489.

Biology

7

Europa, Hydrogen Peroxide, Radiation Effects, Infrared Spectra

Scientific paper

In this paper we present spectra of H2O2-containing ices in the near- and mid-infrared (IR) regions. Spectral changes on warming are shown, as is a comparison of near-IR bands of H2O and H2O2-containing ices. An estimate of the A-value (absolute intensity) for the largest near- IR feature of H2O2 is given. Radiation-decay half-lives are reported for 19 K and 80 K, and are related to the surface radiation doses on Europa. The radiation data show that H2O2 destruction is slower at 80 K than 19 K, and are consistent with the claim that icy material in the outermost micrometer of Europa's surface has been heavily processed by radiation.

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