Department of Physics, Stockholm University, SE-106 91 Stockholm.
J Phys Chem A. 2010 Apr 15;114(14):4843-6. doi: 10.1021/jp9095979.
Dissociative recombination of the Zundel cation D(5)O(2)(+) almost exclusively produces D + 2 D(2)O with a maximum kinetic energy release of 5.1 eV. An imaging technique is used to investigate the distribution of the available reaction energy among these products. Analysis shows that as much as 4 eV can be stored internally by the molecular fragments, with a preference for producing highly excited molecular fragments, and that the deuteron shows a nonrandom distribution of kinetic energies. A possible mechanism and the implications for these observations are addressed.
重水合阳离子 D(5)O(2)(+) 的离解复合几乎完全生成 D + 2 D(2)O，最大动能释放为 5.1eV。本文采用成像技术研究了这些产物中可利用反应能的分布。分析表明，分子碎片可储存高达 4eV 的内部能量，且优先生成高激发态的分子碎片，氘核的动能也呈现非随机分布。文中提出了一种可能的机制，并对这些观察结果进行了讨论。
