Ultracold heavy Rydberg systems and Rydberg molecules under a reaction microscope

反应显微镜下的超冷重里德伯系统和里德伯分子

• 批准号: 316211972
• 负责人: Professor Dr. Herwig Ott
• 金额: --
• 依托单位: Arbeitsgruppe Ultrakalte Quantengase und Quantenatomoptik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/316211972?language=en
• 关键词: Ultracold; heavy; Rydberg; systems; molecules

We propose to create ultracold heavy Rydberg systems composed of a positive and negative rubidium ion. Starting from an ultracold Cloud of rubidium atoms, we will first excite an ultra-long range Rydberg molecule as an intermediate step. The Rydberg molecule can then decay spontaneously or via stimulated emission into the heavy Rydberg system. The study will be done in a reaction microscope, where we have access to the momentum distribution of the chargedparticles, This will allow us to measure the momentum correlations of the two ions. Ultracold Heavy Rydberg systems can have applications as ultracold sources of negative ions and building blocks for strongly coupled plasmas with equal mass of both constituents. A competingdecay channel of the Rydberg molecule is tunneling towards the ionic core, followed by complex dynamics and final dissociation of the molecule in a lower hydrogenic manifold. Using the high temporal resolution of the reaction microscope, we want to study this process in momentum space, thus characterizing the nuclear dynamics of this chemical reaction.

我们建议建立一个由正铷离子和负铷离子组成的超冷重里德伯体系。从一个超冷的铷原子云开始，我们将首先激发一个超远程里德伯分子作为中间步骤。然后，里德伯分子可以自发衰变或通过受激辐射进入重里德伯体系。这项研究将在反应显微镜下进行，在那里我们可以接触到带电粒子的动量分布，这将使我们能够测量两个离子的动量相关性。超冷重里德伯系统可以应用于负离子的超冷源和具有相等质量的强耦合等离子体的构建块。Rydberg分子的竞争衰变通道向离子核心隧穿，随后是复杂的动力学和分子在低氢歧管中的最终解离。利用反应显微镜的高时间分辨率，我们希望在动量空间中研究这一过程，从而表征该化学反应的核动力学。