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arXiv quant-ph/0202075quant-ph
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冷碰撞理论中的分子振动

Molecular vibration in cold collision theory

Alessandro Volpi, John L. Bohn

摘要:

在宽的冷碰撞能范围内(从1 $μ$ K到10 K),研究了基态氧分子与氦原子的冷碰撞.两种模型的比较表明,在低能时,刚性转子近似是非常精确的,能够描述系统的所有动力学特征。这两个模型之间的比较也被扩展到相互作用势He - O $_2$被人为地变强的情况。在这种情况下,振动可以扰动速率常数,但微调刚性转子电位可以减轻两个模型之间的差异。

英文摘要:

Cold collisions of ground state oxygen molecules with Helium have been investigated in a wide range of cold collision energies (from 1 $μ$K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the vibrational degree of freedom. The comparison between the two models shows that at low energies the rigid rotor approximation is very accurate and able to describe all the dynamical features of the system. The comparison between the two models has also been extended to cases where the interaction potential He - O$_2$ is made artificially stronger. In this case vibration can perturb rate constants, but fine-tuning the rigid rotor potential can alleviate the discrepancies between the two models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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