Mobility of t-C4H9+ in polar and nonpolar atmospheric gases
Mobility of t-C4H9+ in polar and nonpolar atmospheric gases
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DOI：
10.1016/j.cplett.2003.11.111
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发表时间：
2004-01-26
影响因子：
2.8
通讯作者：
Leone, SR
中科院分区：
文献类型：
--
作者：
Haber, LH;Husband, J;Leone, SR
用离子耗尽到达时间分析法测得t-C_4 H_9 ~+在He、N ~（-2）、O ~（-2）和H_2 O中的约化零场迁移率分别为14.8 ± 0.6，3.7 ± 0.8，3.3 ± 0.8和0.04 ± 0.02 cm（2）V ~（-1）s ~（-1）。迁移率在三种非极性气体中随漂移场的变化相对恒定，但在水蒸气中随漂移场的增加而显著增加，表明极性和非极性相互作用势对t-C4 H9+迁移率的影响存在较大差异。锁定偶极子计算的结果进行了比较。对更好地模拟高超声速燃烧和离子注入过程的相关性也进行了讨论。(C)2003 Elsevier B. V.保留所有权利。
The reduced zero-field mobilities of t-C4H9+ drifting in He, N-2, O-2 and H2O are measured by ion depletion arrival time analysis to be 14.8+/-0.6, 3.7+/-0.8, 3.3+/-0.8 and 0.04+/-0.02 cm(2) V-1 s(-1), respectively. The mobilities are relatively constant with varying drift fields in the three nonpolar gases, but increase significantly with increasing drift field in water vapor, demonstrating the large difference between polar and nonpolar interaction potentials on the mobility of t-C4H9+. The results are compared to locked-dipole calculations. The relevance towards better modeling of hypersonic combustion and ion-injection processes is also discussed. (C) 2003 Elsevier B.V. All rights reserved.