I am working on plasma wall interaction field. To quantify the desorption rate of hydrogen during He GDC accurately, it is necessary to know the dissociation probabilities of water, Methane and Ethane during He GDC. Generally, the electron density and temperature of He plasma during GDC are 10^8/m^3 and 1 eV. Please provide me the minimum electron temperature range to dissociate the above molecules in low pressure plasma.
Hi,
You just need to look into the tables what is the binding energy of the different chemical bonds of your molecule. This energy (in eV) will give you a decent order of magnitude of the required electron temperature (in eV).
Hi,
what Timothee says is true, but I also would recommend to look up the dissociation cross sections (by electron impact) of your substances as at low energies there might be an energetic threshold that increases the energy needed for dissociation. Hence the binding energy alone will only give you a minimum limit, which is very unlikely to hold.
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