Atomic Physics Experiments Using Lasers and Fast Atomic Beams

本研究有两大重点。 的 第一个焦点是使用快速原子束射频 光谱测量高精度的精细结构 H和He+。 这些测量将用于提供 量子电动力学的基本测试，并提供一个 精细结构常数的独立精确值。 一 第二个焦点是研究三重里德堡态， 氢分子通过分子束激光光谱 电子产生亚稳态分子的技术 轰击被激发到高的里德堡态， 来自单个UV激光器或来自两个激光器的辐射通过 共振中间态 目标是研究结构 的能量水平和衰变机制， 自电离、预解离和辐射发射。

There are two major focal points of this research. The first focal point is the use of fast atomic beam radiofrequency spectroscopy to measure with high precision the fine structure of H and He+. These measurements will be used to provide fundamental tests of quantum electrodynamics and to provide an independent precise value for the fine structure constant. A second focal point is the study of the triplet Rydberg states of the hydrogen molecule through a molecular beam-laser spectroscopy technique in which metastable molecules produced by electron bombardment are excited to high lying Rydberg states through radiation from a single uv laser or from two lasers via a resonant intermediate state. The goal is to study the structure of the energy levels and the mechanism for decay by autoionization, predissociation, and emission of radiation.