Collision-induced absorption in the v2 fundamental band of 12CH4

• 来源期刊: 中国物理B（英文版）
• 关键词: collision-induced absorption v2 fundamental band quadrupole transition moment
• 年，卷（期）: 2007,（11）
• 页码范围: 3319-3322
• 页数: 4页
• 语种: 英文

摘要

The integrated intensities of the collision-induced absorption of the v2 band of 12CH4 perturbed by Ar have been calculated theoretically using the ab initio calculations, and the value of the quadrupole transition moment we obtained is<0|Q|v2> = 5.226ea(20). The corresponding experimental value obtained from 12CH4-Ar spectra is |<0|Q|v2>| = 4.931ea(20).Ignoring vibration-rotation interaction and Coriolis interaction, and considering both the theoretical approximations and experimental uncertainties, the agreement can be regarded as good, thus confirming that the enhancement is due to the quadrupole collision-induced mechanism.