Mechanisms for the Exchange of Energy between a Rydberg Electron and Its Ion-Core: Free Induction Decay Detected Pure Electronic Spectroscopy

在这个由化学系化学结构、动力学和机制（CSDM-A）项目资助的奖项中，麻省理工学院的Robert W. Field教授和他的研究生和本科生同事正在研究里德堡分子中电子和原子核相互作用的方式。菲尔德教授和他的团队工作的最终目标是更好地理解最外层电子几乎不与离子核结合的分子的物理学。该团队探索了这些有趣的量子力学系统中，弱束缚电子和离子核中的能量是如何传递的。利用缓冲气体冷却分子束源，结合STIRAP（受激拉曼绝热通道）和/或ASTRO（绝热聚焦stark -混合Rydberg轨道）激发，以低能量产生一系列核心非穿透Rydberg分子（BaF、CaF、NO和NO2）。利用啁啾脉冲毫米波光谱学探测rydberg内跃迁。实验结果将与最先进的理论方法进行比较。

In this award, funded by the Chemical Structure, Dynamics and Mechanisms (CSDM-A) Program of the Division of Chemistry, Professor Robert W. Field of the Massachusetts Institute of Technology and his graduate student and undergraduate student colleagues are investigating the ways in which electrons and nuclei interact in Rydberg molecules. The ultimate goal of the work by Professor Field and his group is to develop a better understanding of the physics of molecules in which the outermost electron is barely bound to the ion-core. The team explores how energy is transferred between the weakly bound electron and the nuclei in the ion core of these interesting quantum-mechanical systems.A series of core-nonpenetrating Rydberg molecules (BaF, CaF, NO and NO2) will be produced with low energy using a buffer gas cooled molecular beam source coupled with STIRAP (Stimulated Raman Adiabatic Passage) and/or ASTRO (Adiabatically Focused Stark-mixed Rydberg Orbitals) excitation. Intra-Rydberg transitions will be probed using Chirped Pulse mm wave Spectroscopy. Experimental results will be compared to state-of-the-art theoretical methods.