标题： 氢光谱学与兰姆位移偏振计—反氢光谱学实验的另一种方法 显示英文标题

标题： Hydrogen Spectroscopy with a Lamb-shift Polarimeter - An Alternative Approach Towards Anti-Hydrogen Spectroscopy Experiments

摘要： 一种用于快速确定原子束源中质子和氘核极化的兰姆移位偏振计，已在COSY-Jülich的ANKE实验中频繁使用，被证明是测量亚稳氢同位素原子光谱的优良设备。 已经证明，氢中的磁偶极和电偶极跃迁可以作为外部磁场的函数进行测量，从而获得$2^2S_{1/2}$和$2^2P_{1/2}$态的完整布雷特-拉比图。 这将允许研究超精细结构、$g$因子和经典兰姆移位。 尽管数据尚未达到最先进的测量水平，但该方法的潜力巨大，包括可能应用于反氢光谱学。 显示英文摘要

摘要： A Lamb-shift polarimeter, which has been built for a fast determination of the polarization of protons and deuterons of an atomic-beam source and which is frequently used in the ANKE experiment at COSY-J\"ulich, is shown to be an excellent device for atomic-spectroscopy measurements of metastable hydrogen isotopes. It is demonstrated that magnetic and electric dipole transitions in hydrogen can be measured as a function of the external magnetic field, giving access to the full Breit-Rabi diagram for the $2^2S_{1/2}$ and the $2^2P_{1/2}$ states. This will allow the study of hyperfine structure, $g$ factors and the classical Lamb shift. Although the data are not yet competitive with state-of-the-art measurements, the potential of the method is enormous, including a possible application to anti-hydrogen spectroscopy.