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First Principles Based Reactive Atomistic Simulations to Understand the Effects of Molecular Hypervelocity Impact on Cassini's Ion and Neutral Mass SpectrometerWe 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.
Document ID
20110015604
Document Type
Conference Paper
External Source(s)
Authors
Jaramillo-Botero, A. (California Inst. of Tech. Pasadena, CA, United States)
Cheng, M-J (California Inst. of Tech. Pasadena, CA, United States)
Cvicek, V. (California Inst. of Tech. Pasadena, CA, United States)
Beegle, Luther W. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hodyss, R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Goddard, W. A., III (California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 25, 2013
Publication Date
March 7, 2011
Subject Category
Chemistry and Materials (General)
Meeting Information
42nd Lunar and Planetary Science Conference(The Woodlands, TX)
Distribution Limits
Public
Copyright
Other
Keywords
hypervelocity collisions
ion and neutral mass spectrometer (INMS)
Cassini