Mobility of NO+ in helium gas at 77 and 4.3 K
Mobility of NO+ in helium gas at 77 and 4.3 K
复制标题
77 和 4.3 K 下 NO 在氦气中的迁移率
DOI：
10.1088/0953-4075/36/8/306
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
N. Kobayashi
中科院分区：
文献类型：
--
作者：
H. Hidaka;S. Jinno;H. Tanuma;N. Kobayashi
用极低温漂移管质谱计测量了77和4.3K时氦中NO ~+的迁移率。在77 K时迁移率对约化电场E/N的依赖关系与82 K时氦中稀有气体离子的相似。在4.3K下测得的迁移率在450 K附近达到最大值，在15 K附近达到最小值。低于100 K的迁移率低于极化极限，这是由离子和中性原子或分子之间的长程极化相互作用给出的。作为这种现象的可能原因，集群反应，碰撞的旋转激发和相互作用势中的吸引r−6项进行了讨论。
The mobility of NO+ in helium has been measured at 77 and 4.3 K using a very low temperature drift tube mass spectrometer. The dependence of mobility on the reduced electric field E/N at 77 K is similar to that of rare-gas ions in helium at 82 K. The mobility measured at 4.3 K reaches a maximum at an effective temperature around 450 K and a minimum around 15 K. Below 100 K the mobility is lower than the polarization limit, which is given by the long-range polarization interaction between the ion and the neutral atom or molecule. As possible reasons for this phenomenon, the clustering reaction, the rotational excitation by the collision and the attractive r−6 term in the interaction potential are discussed.