气相旋转动力学中'l-Doubling（l双重态）'的表现形式
The manifestations of 'l-Doubling' in gas-phase rotational dynamics
AI总结：
该研究探究了气相中l-Doubling现象对三原子分子相干旋转动力学的影响，指出其易被误判为碰撞衰变，强调了正确认识该现象对旋转动力学相关研究的重要意义。
摘要：
'l-Doubling（l双重态）'现象源于多原子分子中分子旋转与垂直振动（弯曲模式）之间的耦合。这一难以观测的现象在激光诱导分子排列研究中大多被忽略。本文探究并揭示了室温及更高温度下，l-Doubling对三原子分子相干旋转动力学的影响。在激发后的最初几百皮秒内，观测到的l-Doubling动力学可能会被误判为碰撞衰变，这凸显了正确认识l-Doubling在当前耗散旋转动力学研究及一般相干旋转动力学研究中的重要性。
英文摘要：
The 'l-Doubling' phenomenon emanates from the coupling between molecular rotations and perpendicular vibrations (bending modes) in polyatomic molecules. This elusive phenomenon has been largely discarded in laser-induced molecular alignment. Here we explore and unveil the ramifications of 'l-Doubling' to the coherent rotational dynamics of triatomic molecules at ambient temperatures and above. The observed 'l-Doubling' dynamics may be wrongly considered as collisional decay throughout the first few hundreds of picoseconds past excitation, highlighting the importance of correct assimilation of l-Doubling in current research of dissipative rotational dynamics and in coherent rotational dynamics in general.
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