engleski

Effect of transport of growing nanoparticles on capacitively coupled rf discharge dynamics

We present experimental and numerical studies of the properties of a capacitively coupled 13.56MHz discharge in a mixture of Ar and C2H2 with growing nanosize particles. It is found that at the initial stage of the growth, nanoparticles are accumulated near the sheath-plasma boundaries, where the ionization by electrons is maximal. The nanoparticles suppress the ionization due to the absorbing fast electrons and stimulate a quick change of the plasma parameters followed by a transition between different modes of discharge operation. At that moment the peaked distribution of the dust particles transforms into a flat one.

argon; discharges (electric); dusty plasmas; nanoparticles; organic compounds; plasma collision processes; plasma sheaths; plasma transport processes

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