设计了一套可以在理想条件下观测氡气运移的装置 ,通过多次实验发现 :在理想条件下 ,虽然氡及其子体的比重比空气大 ,却具有明显向上运移能力 ,存在一种比扩散和重力沉降大得多的“上浮”运移机制。本文提出了氡团簇运移模型对这一现象进行解释 ,该模型认为 :He核及He可以与氡及其子体结合成团簇 ,由于He很轻 ,当这一团簇的重量小于空气对它的浮力时 ,导致团簇自行上升 A device designed to observe radon migration under ideal conditions is designed. Through many experiments, it is found that under the ideal conditions, although radon and its daughters have a higher specific gravity than air, they have obvious upward migration ability, A “floating” migration mechanism much larger than diffusion and gravity subsidence. This paper presents a radon cluster migration model to explain this phenomenon, the model that: He nucleus and He radon and its progeny combined into clusters, because He is very light, when the weight of this cluster is less than the air Buoyancy on it causes the cluster to rise on its own