Infrared spectra and radiation stability of H2O2 ices relevant to Europa.
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.
Hudson
Reggie L
RL
Department of Chemistry, Eckerd College, St. Petersburg, Florida 33711, USA. hudsonrl@eckerd.edu
Moore
Marla H
MH
D006861:Hydrogen Peroxide / Q000737:chemistry* / Q000528:radiation effects*; D007053:Ice; D018538:Jupiter; D013055:Spectrophotometry, Infrared; D013696:Temperature
D007053:Ice; D006861:Hydrogen Peroxide