Electron Attachment to N2O
Electron Attachment to N2O
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N2O 上的电子附着
DOI：
10.1063/1.1672152
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发表时间：
1969
影响因子：
4.4
通讯作者：
L. Christophorou
中科院分区：
文献类型：
--
作者：
E. Chaney;L. Christophorou
用群方法研究了在Ar和N混合气体中电子对N_2O的附着，并将测量的绝对附着速率与N_2O生成O-−的束流数据相结合。在373°K下，N2O产生O-−的截面在2.3 eV时的峰值为8.3 × 10−-18 cm~2。在∼ 0.2和∼ 1.5 eV之间的能区，N2O生成O−的截面随温度升高而增大(32 3° ≤ T ≤ 4 73°K)，表明N2O在较高的振动能级上发生解离吸附.在含有N_2的混合物上的结果表明，N_2O-−是电子吸附的主要产物。表观三体附着速率系数随电子能量的增加而增大，表明N2O-−的形成有一个活化能。比较和讨论了电子与N2O结合的各种群和束流数据。这项研究进一步证明了群束技术的潜力。
Electron attachment to N2O has been studied with the swarm method in mixtures with argon and nitrogen, and the measured absolute attachment rates have been combined with beam data on the production of O− from N2O. The cross section for the production of O− from N2O at 373°K has a peak value of 8.3 × 10−18 cm2 at 2.3 eV. In the energy region between ∼ 0.2 and ∼ 1.5 eV the cross section for the production of O− from N2O increases with increasing temperature (323° ≤ T ≤ 473°K), suggesting dissociative attachment from higher vibrational levels of N2O. The results on mixtures with N2 evidence the formation of N2O− as a primary product of electron attachment. The apparent three‐body attachment rate coefficient increases with increasing electron energy, suggesting an activation energy for the formation of N2O−. The various swarm and beam data on electron attachment to N2O are compared and discussed. This study demonstrates further the potential of the swarm–beam technique.