氢原子1S-2S跃迁频率的改进测量
原子物理
2011-11-15 v1
摘要
我们通过5.8 K原子束上的双光子光谱学测量了原子氢中的1S-2S跃迁频率。对于超精细质心，我们得到f_{1S-2S} = 2 466 061 413 187 035 (10) Hz。这是4.2×10^{-15}的分数频率不确定度，比我们小组之前的测量[M. Fischer et al., Phys. Rev. Lett. 92, 230802 (2004)]改进了3.3倍。探测激光频率通过频率梳与移动铯喷泉钟FOM相位相干地链接。
引用
@article{arxiv.1107.3101,
title = {Improved Measurement of the Hydrogen 1S - 2S Transition Frequency},
author = {Christian G. Parthey and Arthur Matveev and Janis Alnis and Birgitta Bernhardt and Axel Beyer and Ronald Holzwarth and Aliaksei Maistrou and Randolf Pohl and Katharina Predehl and Thomas Udem and Tobias Wilken and Nikolai Kolachevsky and Michel Abgrall and Daniele Rovera and Christophe Salomon and Philippe Laurent and Theodor W. Hänsch},
journal= {arXiv preprint arXiv:1107.3101},
year = {2011}
}
备注
5 pages, 4 figures