The Heat of Dissociation of CO and the Electron Affinity of O
The Heat of Dissociation of CO and the Electron Affinity of O
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CO 的解离热和 O 的电子亲和势
DOI：
10.1103/physrev.46.268
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发表时间：
1934
期刊：
影响因子：
--
通讯作者：
W. W. Lozier
中科院分区：
文献类型：
--
作者：
W. W. Lozier
本文用上述装置研究了CO和O2中初级电子碰撞产生的离解。在O2中研究的过程是在2.9 v下的O2 −→ O−+ O和在12.0 v下的O2 −→ O−+ O*，估计精度为±0.2 v。这些结果给出了氧原子的电子亲合能E0的两个值，都等于2.2±0.2 v。在CO中研究的过程是CO −→ C+ O−在9.5 v，CO→ C++ O−在20.9 v，和CO +→ C++ O在22.8 v，估计精度为±0.1 v。9.6±0.1或11.6±0.1 v.这些实验无法在两者之间做出决定，但来自其他来源的大多数证据都指向较低的值。如果D（CO）= 9.6 v，我们必须承认稳定激发态O−离子的可能性。然而，如果D（CO）= 11.6 V，这些实验CO给出两个值的E 0，1.9和2.1 V的负离子的形成过程中所涉及的电子碰撞进行了讨论。
An apparatus previously described has been employed in a study of the dissociation produced by primary electron impact in CO and O 2. The processes studied in O 2 are O 2−→ O−+ O at 2.9 v and O 2−→ O−+ O* at 12.0 v with an estimated accuracy of±0.2 v. These figures refer to the potential energy of the dissociation products, the normal molecule considered as zero. These results give two values of E 0, the electron affinity of the oxygen atom, both equal to 2.2±0.2 v. The processes studied in CO are C O−→ C+ O− at 9.5 v, CO→ C++ O− at 20.9 v, and C O+→ C++ O at 22.8 v, with an estimated accuracy of±0.1 v. It is concluded that D (CO) may have one of two possible values, 9.6±0.1 or 11.6±0.1 v. These experiments are unable to decide between the two but most of the evidence from other sources points to the lower value. If D (CO)= 9.6 v we must admit the possibility of stable excited O− ions. However, if D (CO)= 11.6 v, these experiments on CO give two values of E 0, 1.9 and 2.1 v. The processes involved in the formation of negative ions by electron impact are discussed.