阐明碰撞能量和光子动量传递在超远距离雷德贝格分子形成中的作用

arXiv - PHYS - Atomic Physics Pub Date : 2024-06-12 DOI:arxiv-2406.08671

C. Wang, Y. Lu, S. K. Kanungo, F. B. Dunning, T. C. Killian, S. Yoshida

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引用次数: 0

摘要

报告了在冷气体中通过光子激发产生的 $^{84}$Sr 和 $^{86}$Sr 5sns $^1S_0$ 超远距离里德伯分子二聚体旋转分布的光谱测量结果。二聚物是通过 5s5p $^1P_1$ 中间态的双光子激发产生的。利用小星态可以详细研究初始原子-原子相互作用、雷德贝格激发过程中的光子动量传递以及样品温度在决定光谱线形和最终二聚物旋转分布中的作用。研究结果与包含这些效应的模型预测结果十分吻合。本研究进一步凸显了超远距离 Rydberg 分子形成对初始冷气体状态的敏感性。

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Elucidating the roles of collision energy and photon momentum transfer in the formation of ultralong-range Rydberg molecules

Spectroscopic measurements of the rotational distribution of $^{84}$Sr and $^{86}$Sr 5sns $^1S_0$ ultralong-range Rydberg molecular dimers created via photoassociation in a cold gas are reported. The dimers are produced by two-photon excitation via the 5s5p $^1P_1$ intermediate state. The use of singlet states permits detailed study of the roles that the initial atom-atom interaction, photon momentum transfer during Rydberg excitation, and sample temperature play in determining the spectral lineshape and final dimer rotational distribution. The results are in good agreement with the predictions of a model that includes these effects. The present work further highlights the sensitivity of ultralong-range Rydberg molecule formation to the state of the initial cold gas.

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arXiv - PHYS - Atomic Physics

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