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首页> 外文期刊>The Journal of Chemical Physics >Anisotropic kinetic energy release and gyroscopic behavior of CO2 super rotors from an optical centrifuge
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Anisotropic kinetic energy release and gyroscopic behavior of CO2 super rotors from an optical centrifuge

机译：来自光学离心机的二氧化碳超转子的各向异性动能释放和陀螺行为

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An optical centrifuge is used to generate an ensemble of CO2 super rotors with oriented angular momentum. The collision dynamics and energy transfer behavior of the super rotor molecules are investigated using high-resolution transient IR absorption spectroscopy. New multipass IR detection provides improved sensitivity to perform polarization-dependent transient studies for rotational states with 76 <= J <= 100. Polarization-dependent measurements show that the collision-induced kinetic energy release is spatially anisotropic and results from both near-resonant energy transfer between super rotor molecules and non-resonant energy transfer between super rotors and thermal molecules. J-dependent studies show that the extent and duration of the orientational anisotropy increase with rotational angular momentum. The super rotors exhibit behavior akin to molecular gyroscopes, wherein molecules with larger amounts of angular momentum are less likely to change their angular momentum orientation through collisions. Published by AIP Publishing.
机译：光学离心机用于产生具有定向角动量的CO 2超转子的集合。使用高分辨率瞬时IR吸收光谱研究超转子分子的碰撞动力学和能量传递行为。新的多肢体IR检测提供了提高的灵敏度，以对具有76 <= J <= 100的旋转状态进行偏振依赖性瞬态研究。偏振依赖性测量表明，碰撞诱导的动能释放是空间各向异性的，并产生近谐振能量的各向异性和结果超转子分子和超旋转转子和热分子之间的非共振能量转移之间的转移。 J依赖性研究表明，取向各向异性的程度和持续时间随旋转角动量而增加。超转子表现出类似于分子陀螺的行为，其中具有较大角度的分子不太可​​能通过碰撞改变它们的角动量取向。通过AIP发布发布。

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