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Infrared spectra and radiation stability of H2O2 ices relevant to Europa.

Authors
  • Hudson, Reggie L
  • Moore, Marla H
Type
Published Article
Journal
Astrobiology
Publisher
Mary Ann Liebert
Publication Date
Jun 01, 2006
Volume
6
Issue
3
Pages
483–489
Identifiers
PMID: 16805703
Source
Medline
License
Unknown

Abstract

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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