论文标题
电子散射在液态水和无定形冰中：惊人的相似之处
Electron Scattering in Liquid Water and Amorphous Ice: A Striking Resemblance
论文作者
论文摘要
缺乏准确的低能电子散射横截面是液态水的重要来源，这是放射化学和生物学建模的不确定性。数十年来，已经在争议中讨论了现有的无定形冰散射横截面以缺乏液体数据的使用。在这里，我们将液态水的实验光发射数据与使用无定形冰横截面的相应预测进行了比较，以解决有关液态水和无定形冰中电子散射差异的争论。我们发现液体中的散射特性非常相似，电子动能的冰量高达几百个电子伏特。此处推荐的液态水的散射横截面是无定形冰横截面的延伸。在当前可用的实验数据的框架内，我们的工作回答了有关液体水中电子散射的最讨论的问题之一。
The lack of accurate low-energy electron scattering cross sections for liquid water is a substantial source of uncertainty in the modelling of radiation chemistry and biology. The use of existing amorphous ice scattering cross sections for lack of liquid data has been discussed controversially over decades. Here, we compare experimental photoemission data of liquid water with corresponding predictions using amorphous ice cross sections, with the aim of resolving the debate regarding the difference of electron scattering in liquid water and amorphous ice. We find very similar scattering properties in the liquid and the ice for electron kinetic energies up to a few hundred electron volts. The scattering cross sections recommended here for liquid water are an extension of the amorphous ice cross sections. Within the framework of currently available experimental data, our work answers one of the most debated questions regarding electron scattering in liquid water.
