The reactions of Ba+ ions with O2 and H2O
The reactions of Ba+ ions with O2 and H2O
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Ba离子与O2和H2O的反应
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
E. Murad
中科院分区：
文献类型：
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作者：
E. Murad
在双质谱仪系统中研究了Ba+与O2和H2O以及Al+与O2的反应。初级离子由表面电离形成。Ba ~+（O_2，O）BaO ~+和Al ~+（O_2，O）AlO ~+的电子结构与热化学数据一致。Al ~+（O ~ 2，O）AlO ~+的结果与D°0（Al ~+-O）= 1.69± 0.1eV一致。Ba+的反应由于激发态Ba+（2D ~（3/2），5/2）的存在而变得复杂，必须对该物种对反应的贡献进行修正。Ba ~+（O ~ 2，O）BaO ~+的校正结果与D°0（Ba ~+-O）= 4.1± 0.2eV一致。Ba+（H2O，H）BaOH+是放热的，表现得有点像吸热反应，并且在ECM<1 eV时具有小的横截面。简要讨论了光束中激发态的布居及其贡献。还简要讨论了对大气的影响。
The reactions of Ba+ with O2 and with H2O and of Al+ with O2 have been studied in a double‐mass spectrometer system. Primary ions were formed by surface ionization. Thresholds were observed for Ba+(O2, O)BaO+ and for Al+(O2, O)AlO+ which were in agreement with values derived from thermochemical data. The results obtained for Al+(O2, O) AlO+ are in agreement with D°0(Al+–O) = 1.69±0.1 eV. The reactions of Ba+ were complicated by the presence of an excited state Ba+(2D3/2, 5/2), and corrections had to be made for the contribution of this species to the reaction. The corrected results for Ba+(O2, O)BaO+ are in agreement with D°0(Ba+–O) = 4.1±0.2 eV. Ba+(H2O, H)BaOH+, which is exothermic, behaves somewhat like an endothermic reaction, and has small cross sections at ECM<1 eV. The population of the excited states in the beam and their contributions are briefly discussed. Atmospheric implications are also briefly discussed.