A new model of the chemistry of ionizing radiation in solids: CIRIS

Abstract

The collisions between high-energy ions and solids can result in significant physical and chemical changes to the material. These effects are potentially important for better understanding the chemistry of interstellar and planetary bodies, which are exposed to cosmic radiation and the solar wind, respectively, however, modeling such collisions on a detailed microscopic basis has thus far been largely unsuccessful. To that end, a new model, entitled CIRIS: the Chemistry of Ionizing Radiation in Solids, was created to calculate the physical and chemical effects of the irradiation of solid materials. With the new code, we simulate O2 ice irradiated with 100 keV protons. Our models are able to reproduce the measured ozone abundances of a previous experimental study, as well as independently predict the approximate thickness of the ice used in that work.

References in corpus (8)

• Complex Chemistry in Star-Forming Regions: An Expanded Gas-Grain Warm-up Chemical Model
• Formation of methyl formate and other organic species in the warm-up phase of hot molecular cores
• Simulation of the Formation and Morphology of Ice Mantles on Interstellar Grains
• Desorption of CO and O2 interstellar ice analogs
• A primordial origin for molecular oxygen in comets: A chemical kinetics study of the formation and survival of O${}_2$ ice from clouds to disks
• CO diffusion into amorphous H2O ices
• Interstellar Simulations Using A Unified Microscopic-Macroscopic Monte Carlo Model with a full Gas-Grain Network including Bulk Diffusion in Ice Mantles
• A New and Simple Approach to Determine the Abundance of Hydrogen Molecules on Interstellar Ice Mantles

Cited by in corpus (14)

• Formation of complex organic molecules in hot molecular cores through nondiffusive grain-surface and ice-mantle chemistry
• Formation of Complex Organic Molecules in Cold Interstellar Environments through non-diffusive grain-surface and ice-mantle chemistry
• Efficient Production of S${}_8$ in Interstellar Ices: The effects of cosmic ray-driven radiation chemistry and non-diffusive bulk reactions
• ALMA Detection of Interstellar Methoxymethanol (CH${}_3$OCH${}_2$OH)
• Prestellar grain-surface origins of deuterated methanol in comet 67P/Churyumov-Gerasimenko
• On Simulating the Proton-Irradiation of O${}_2$ and H${}_2$O Ices Using Astrochemical-type Models, with Implications for Bulk Reactivity
• Simulations of ice chemistry in cometary nuclei
• Enhanced formation of interstellar complex organic molecules on carbon monoxide ice
• Cosmic ray tracks in astrophysical ices: Modeling with the Geant4-DNA Monte Carlo Toolkit
• Icy molecule desorption in interstellar grain collisions
• ALMA ACA study of the H${}_2$S/OCS ratio in low-mass protostars
• A New Method for Simulating Photoprocesses in Astrochemical Models
• Chemical exploration of Galactic cold cores
• Simulation of proton radiolysis of H2O and O2 ices with the Nautilus code