Interactions between accelerated dust particles and an aerogel target

二氧化硅（SiO2）气凝胶已被用作本实验中的除尘器。撞击或沉积的灰尘颗粒被捕获在气凝胶中，它们在真空排气后留在气凝胶中。然后，粉尘传输的信息，如捕获角和速度，以及颗粒的性质，如大小，形状和形态将通过表面分析进行评估。由于气凝胶中捕获的灰尘的量是Si靶上沉积的灰尘的两倍，因此这种灰尘收集方法对于估计沉积过程是有用的，而不受从高真空水平到大气压的压力变化的影响。

Silica (SiO2) aerogel has been used as a dust collector in this experiment. Impacting or deposited dust particles are trapped in the aerogel where they remain after the vacuum vent. Then, information of dust transport such as the trapping angle and velocity as well as the particle properties such as size, shape and morphology will be evaluated by surface analysis. Since the amount of dust trapped in the aerogel is two times larger than the dust deposited on an Si target, this dust collection method is useful for estimation of the deposition process without the influence of changing pressure from a high vacuum level to atmosphere.