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Old   June 23, 2002, 23:07
Default about activation energy
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fanadam
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Hi, everyone. I'm simulating plasma spray, which involves the following reactions: Ar(+)+e=Ar, H(+)+e=H, H+H=H2. But I don't know the activation energy and Pre-exponential Factors of the 3 reactions. I've searched them in the internet, but I got nothing. Could you do me a favor? Thanks a lot!
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Old   June 24, 2002, 10:54
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Dean
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The H2 + M = 2H + M rate can be found in the GRI mechanism at www.me.berkeley.edu/gri_mech . Also, it can be found in almost any issue of any combustion journal, such as Combustion and Flame, as part of some detailed kinetics mechanism.

The ionic reactions are harder to find, but should be available in the literature on plasma torches.
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Old   June 24, 2002, 13:26
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ken
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Try http://www.kinema.com/download.htm and see if you can find any useful information from one of the downloadable *.dat files.

or

1. (1992) Sommerer, T. J.;Kushner, M. J.. "Numerical Investigation of the Kinetics and Chemistry of Rf Glow-Discharge Plasmas Sustained in He ; N2 ; O2 ; He/N2/O2 ; He/Cf4/O2 ; and Sih4/Nh3 Using a Monte-Carlo-Fluid Hybrid Model." Journal of Applied Physics71(#4):1654-1673 2. (1995) Meeks, E.;Shon, J. W.. "Modeling of Plasma-Etch Processes Using Well Stirred Reactor Approximations and Including Complex Gas-Phase and Surface-Reactions." Ieee Transactions On Plasma Science23(#4):539-549 and references therein.
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