The presence of water also helps to explain why most of the xenon now resides in grains of aluminum phosphate rather than in the uranium-rich minerals where fission first created these radioactive precursors.

• 下页〈气揭露了运作周期〉详细的说明，有两个重要关键：这些反应堆很可能是以某种间歇性的型态运作，并且必定有大量的水在岩石间流动，足够洗除部份的碲和碘，这两种氙的放射性母核可溶于水。