A mechanism for the production of hydrogen peroxide and the hydroperoxyl radical on icy satellites by low-energy electrons
A mechanism for the production of hydrogen peroxide and the hydroperoxyl radical on icy satellites by low-energy electrons
复制标题
低能电子在冰卫星上产生过氧化氢和氢过氧自由基的机制
DOI：
10.1016/j.icarus.2004.07.002
复制
发表时间：
2004
期刊：
影响因子：
3.2
通讯作者：
L. Sanche
中科院分区：
文献类型：
--
作者：
X. Pan;A. Bass;J. Jay;L. Sanche
过氧化氢（H2O2）是木星卫星木卫二、木卫三和木卫四的水冰覆盖表面的少量成分之一。在这里，我们证明了h2o2的产生可能是由低能电子（LEEs）与水分子的解离电子附着（DEA）引起的。电子激发或电子电离也有助于在更高的电子能量下形成h2o2。最后，我们证明了氢过氧（HO2）自由基可以通过LEE撞击在冰冻卫星表面形成。
Hydrogen peroxide (H2O2) is one of the minor constituents of the water ice covered surfaces of the jovian satellites Europa, Ganymede, and Callisto. Here we demonstrate that H2O2production may be initiated by the dissociative electron attachment (DEA) of low-energy electrons (LEEs) to water molecules. Electronic excitation or ionization by electrons also contributes to H2O2formation at higher electron energies. Finally, we show that hydroperoxyl (HO2) radicals could be formed on the surfaces of icy satellites by LEE impact.