The time-dependent properties of an Ar/C 2 H 2 dusty plasma (neutral, ion and electron densities, effective electron temperature and dust charge) are studied using a volume-averaged model for conditions corresponding to experiments on nanoparticle growth. The calculated density evolution for C 2 H 2 , H 2 and C 4 H 2 molecules are compared with time-resolved measurement of the mass peaks of the neutral species and the effects of the dust density on the plasma properties are analyzed. Time evolutions of the main positive and negative ions are also obtained thanks to the calculations. As a consistency check the time-dependence of the dust radius is also obtained numerically, assuming that an increase of the dust radius is due to deposition of hydrocarbon ions and C 2 H radicals on the surface of dust particles. It is shown that for conditions corresponding to the experiment, the ions are the main contributo...

中文翻译：

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Ar / C 2 H 2形成粉尘等离子体中的等离子体特性随时间的变化

使用体积平均模型针对与纳米粒子生长实验相对应的条件，研究了Ar / C 2 H 2尘土等离子体的时变特性（中性，离子和电子密度，有效电子温度和尘埃电荷）。将计算出的C 2 H 2，H 2和C 4 H 2分子的密度演化与中性物质质量峰的时间分辨测量值进行比较，并分析粉尘密度对等离子体性能的影响。通过计算，还可以获得主要正离子和负离子的时间演化。作为一致性检查，还假设尘埃半径的增加是由于碳氢化合物离子和C 2 H自由基在尘埃颗粒表面的沉积所致，因此还可以从数值上获得尘埃半径的时间依赖性。