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- W2071302079 abstract "The neutral gas temperature of fluorocarbon plasmas in a remote toroidal transformer-coupled source was measured to be greater than 5000K, under the conditions of a power density greater than 15W∕cm3 and pressures above 2torr. The rovibrational bands of C2 molecules (swan bands, dΠg3→aΠu3) were fitted to obtain the rotational temperature that was assumed to equal the translational temperature. This rotational-translational temperature equilibrium assumption was supported by the comparison with the rotational temperature of second positive system of added N2. For the same gas mixture, the neutral gas temperature is nearly a linear function of plasma power, since the conduction to chamber wall and convection are the major energy-loss processes, and they are both proportional to neutral gas temperature. The dependence of the neutral gas temperature on O2 flow rate and pressure can be well represented through the power dependence, under the condition of constant current operation. An Arrhenius type of dependence between the etching rate of oxide film and the neutral gas temperature is observed, maybe indicating the importance of the pyrolytic dissociation in the plasma formation process when the temperature is above 5000K." @default.
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- W2071302079 date "2006-01-01" @default.
- W2071302079 modified "2023-10-16" @default.
- W2071302079 title "Neutral gas temperature measurements of high-power-density fluorocarbon plasmas by fitting swan bands of C2 molecules" @default.
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- W2071302079 doi "https://doi.org/10.1063/1.2159545" @default.
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