Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2−, and O−
Flowing Afterglow Studies of Formation and Reactions of Cluster Ions of O2+, O2−, and O−
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O2+、O2− 和 O− 簇离子的形成和反应的流动余辉研究
DOI：
10.1063/1.1673449
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发表时间：
1970
影响因子：
4.4
通讯作者：
E. Ferguson
中科院分区：
文献类型：
--
作者：
N. Adams;D. Bohme;D. Dunkin;F. Fehsenfeld;E. Ferguson
利用温度控制的流动余辉系统，在300°K以下测量了H_2、N_2、O_2、CO_2、N_2O、SO_2和O_2~+与氦第三体缔合的速率常数。在200°K下测定了N_2、O_2和CO_2与O_2−的缔合反应以及N_2和CO_2与O_−的缔合反应的速率常数。一些以这种方式形成的离子团簇通过A±·B+C → A±·C+B类型的二元中性交换反应进行了反应，得到了在300°K及以下这些反应的速率常数。与O_2~+的结合能大小依次为H_2、N_2、O_2、N_2O、SO_2、H_2O。对于O2−离子团簇，其大小顺序为：N_2、O_2、H_2O、CO_2和NO。在某些情况下，可以观察到平衡，从而可以确定结合能差。三体缔合速率常数随离子团簇结合能的增加而增大，符合理论预期。
The temperature‐controlled flowing afterglow system has been utilized at temperatures below 300°K to measure the rate constants for the association of H2, N2, O2, CO2, N2O, and SO2 to O2+ with helium third body. Rate constants for the association of N2, O2, and CO2 to O2− and for the association of N2 and CO2 to O− have been measured at 200°K. Some of the ion clusters formed in this way reacted via binary neutral interchange reactions of the type A±·B+C → A±·C+B. Rate constants for these processes were obtained at and below 300°K. The observation of these reactions allows an ordering of ion cluster bond energies. The increasing order of binding energies to O2+ is H2, N2, O2, N2O, SO2, and H2O. For the O2− ion clusters the increasing order is N2, O2, H2O, CO2, and NO. In some cases, equilibria are observed allowing a determination of binding energy differences. The three‐body association rate constants increase with increasing binding energy of the ion cluster, in accord with theoretical expectation.