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arXiv 1504.01432physics.chem-phphysics.atom-ph
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外磁场中分子超转子的动力学

Dynamics of molecular superrotors in external magnetic field

Aleksey Korobenko, Valery Milner

摘要:

我们用光学离心机激发双原子氧和氮到高转动态,并研究了它们在外磁场中的动力学。离子成像是用来直接可视化,并遵循时间,分子超转子的旋转平面。在顺磁性氧和非磁性氮中,磁场和分子角动量之间的两种不同的相互作用机制导致性质上不同的行为。在氮气中,我们观察到的进动的分子角动量周围的场矢量。在氧中,强自旋-旋转耦合导致更快和更丰富的动力学,包括将旋转平面分裂成三个独立的分量。由于离心分离的分子演变没有显着的分散的分子波函数,所观察到的磁相互作用提出了一个有效的机制,用于控制分子旋转的平面。

英文摘要:

We excite diatomic oxygen and nitrogen to high rotational states with an optical centrifuge and study their dynamics in external magnetic field. Ion imaging is employed to directly visualize, and follow in time, the rotation plane of molecular superrotors. The two different mechanisms of interaction between the magnetic field and the molecular angular momentum in paramagnetic oxygen and non-magnetic nitrogen lead to the qualitatively different behaviour. In nitrogen, we observe the precession of the molecular angular momentum around the field vector. In oxygen, strong spin-rotation coupling results in faster and richer dynamics, encompassing the splitting of the rotation plane in three separate components. As the centrifuged molecules evolve with no significant dispersion of the molecular wave function, the observed magnetic interaction presents an efficient mechanism for controlling the plane of molecular rotation.

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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