Evidence of the Existence of an He3+ Ion
Evidence of the Existence of an He3+ Ion
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He3 离子存在的证据
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
P. L. Patterson
中科院分区：
文献类型：
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作者：
P. L. Patterson
使用离子迁移率装置研究了在1-30 ° C气压和300°-76 ° K温度下氦中氦离子的化学性质。在低于200°K的温度下，观察到He 2+离子转化为被认为是He 3+的离子。He 3+的鉴定是基于在不同实验条件下对其行为的观察。在76°K时，从He 2+形成He 3+的速率比从He+形成He 2+的三体反应快。后一反应的速率系数在76°K时为1.7 ± 0.4 × 10− 31 cm 6/sec。在135° ~ 200°K温度范围内，He ~（2+）和He ~（3+）处于平衡状态。由平衡常数与温度的关系求得He ~（3+）的离解能为0.17 ± 0.03。
An ion‐mobility apparatus was used to study the chemistry of helium ions in helium at gas pressures of 1–30 torr and temperatures of 300°–76°K. At temperatures below 200°K, the He2+ ion was observed to convert to an ion believed to be He3+. Identification of the He3+ was based upon observations of its behavior under varied experimental conditions. At 76°K, the rate of formation of He3+ from He2+ was faster than the three‐body formation of He2+ from He+. The rate coefficient of the latter reaction was found to be 1.7 ± 0.4 × 10− 31 cm6/sec at 76°K. Between the temperatures of 135° and 200°K, He2+ and He3+ were present in equilibrium. A He3+ dissociation energy of 0.17 ± 0.03 was determined from measurements of the equilibrium constant as a function of temperature.