Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstr. 25, A-6020 Innsbruck, Austria.
Department of Chemistry, University of Leicester, University Road, Leicester LE1 7RH, United Kingdom.
J Chem Phys. 2017 Nov 21;147(19):194301. doi: 10.1063/1.5003428.
Low energy electron attachment to mixed (H)/(O) clusters and their deuterated analogs has been investigated for the first time. These experiments were carried out using liquid helium nanodroplets to form the clusters, and the effect of the added electron was then monitored via mass spectrometry. There are some important differences between electron attachment to the pure clusters and to the mixed clusters. A particularly notable feature is the formation of HO and HO ions from an electron-induced chemical reaction between the two dopants. The chemistry leading to these anions appears to be driven by electron resonances associated with H rather than O. The electron resonances for H can lead to dissociative electron attachment (DEA), just as for the free H molecule. However, there is evidence that the resonance in H can also lead to rapid electron transfer to O, which then induces DEA of the O. This kind of excitation transfer has not, as far as we are aware, been reported previously.
首次研究了混合（H）/（O）团簇及其氘代类似物与低能电子的附着。这些实验是使用液氦纳米液滴形成团簇进行的，然后通过质谱监测添加电子的影响。电子附着于纯团簇和混合团簇之间存在一些重要差异。一个特别值得注意的特征是，在两种掺杂剂之间的电子诱导化学反应中形成了 HO 和 HO 离子。导致这些阴离子的化学似乎是由与 H 相关的电子共振而不是 O 驱动的。对于 H 的电子共振可以导致离解电子附着（DEA），就像对于游离 H 分子一样。然而，有证据表明，H 中的共振也可以导致快速电子转移到 O，然后诱导 O 的 DEA。就我们所知，这种激发转移以前尚未有报道。
