Fourier transform synchrotron and infrared tunable laser studies of molecular spectra and energy transfer

我们的团队使用各种光谱技术来研究气相分子的旋转和振动能量，碰撞相互作用和能量转移。特别令人感兴趣的是具有大幅度内部运动的分子，例如甲醇和甲胺，其中分子的两个部分可以相对于彼此移动。这些运动与旋转和振动耦合，产生分子能级的复杂分裂和移动。由此产生的红外光谱是非常丰富的，并使分子在天体物理环境中的物理条件，以及原型的研究分子内振动再分配（IVR）过程中建立热平衡的重要探针。

Our group uses a variety of spectroscopic techniques to study the rotational and vibrational energies of molecules in the gas phase, collisional interactions and energy transfer. Of particular interest are molecules with large-amplitude internal motions, such as methanol and methylamine, in which two parts of the molecule can move with respect to each other. These motions couple with the rotation and vibration to create complex splittings and shifts of the molecular energy levels. The resulting infrared spectra are very rich, and make the molecules excellent probes of physical conditions in astrophysical environments as well as prototypes for study of intramolecular vibrational redistribution (IVR) processes important in establishing thermal equilibrium.