Laboratory studies of radiation effects in water ice in the outer solar system

Raúl A. Baragiola, Mark J. Loeffler, Ujjwal Raut, Ricardo A. Vidal, Christian D. Wilson

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


We present new experimental results on radiolysis of water ice below 140 K induced by 150-eV electrons and 100-keV ions, obtained to understand processes occurring in the outer solar system and interstellar space. The experimental methods discussed are low-energy electron-energy-loss spectroscopy (EELS) and Fourier-transform-infrared (FTIR) spectroscopy. The phenomena studied are the formation and trapping of radiation products, in particular H 2O 2, and radiation-induced amorphization of crystalline ice.

Original languageEnglish (US)
Pages (from-to)187-191
Number of pages5
JournalRadiation Physics and Chemistry
Issue number2-3
StatePublished - Feb 2005
Externally publishedYes


  • Amorphization
  • Electron-energy-loss spectroscopy (EELS)
  • Hydrogen peroxide (H O )
  • Hydroperoxyl radical (HO )
  • Ice radiolysis
  • Sputtering

ASJC Scopus subject areas

  • Radiation


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