Molecular dynamics simulations are carried out to investigate dielectric breakdown of lunar regolith induced by space weather events and its potential effects on water ice formation on lunar surface. We find that dielectric breakdown can trigger the water formation process by breaking the chemical bonds of regolith grains and exposing the oxygen atoms to react with the hydrogen implanted by solar wind. In the permanently shadowed region, the water molecules formed become attached to regolith grains in the molecular structure of ice after the event. Thus, dielectric breakdown can also enable the preservation of water molecules by changing the hydrophobicity of regolith grains.

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月球介电体分解的分子动力学模拟：对月球表面水冰形成的影响

进行了分子动力学模拟，以研究由空间天气事件引起的月长石介电击穿及其对月球表面水冰形成的潜在影响。我们发现，电介质击穿可以通过破坏碎屑石的化学键并使氧原子与太阳风注入的氢发生反应来触发水形成过程。事件发生后，在永久阴影区域中，形成的水分子附着在冰分子结构中的重塑颗粒上。因此，介电击穿还可以通过改变重碎石颗粒的疏水性来保护水分子。