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Title: First principles based reactive atomistic simulations to understand the effects of molecular hypervelocity impact on Cassini's ion and neutral mass spectrometer
Authors: Inorganic, Organic and Physical Chemistry
Jaramillo-Botero, A.
Cheng, M-J
Cvicek, V.
Beegle, Luther W.
Hodyss, R.
Goddard III, W. A.
Keywords: ion and neutral mass spectrometer (INMS)
hypervelocity collisions
Issue Date: 7-Mar-2011
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011.
Citation: 42nd Lunar and Planetary Science Conference, The Woodlands, Texas, March 7, 2011.
Abstract: We report here on the predicted impact of species such as ice-water, CO2, CH4, and NH3, on oxidized titanium, as well as HC species on diamond surfaces. These simulations provide the dynamics of product distributions during and after a hypervelocity impact event, ionization fractions, and dissociation probabilities for the various species of interest as a function of impact velocity (energy). We are using these results to determine the relevance of the fragmentation process to Cassini INMS results, and to quantify its effects on the observed spectra.
Appears in Collections:JPL TRS 1992+

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