Doppler-corrected Balmer spectroscopy of Rydberg positronium
Doppler-corrected Balmer spectroscopy of Rydberg positronium
复制标题
DOI：
10.1103/physreva.90.012503
复制
发表时间：
2014-07-03
影响因子：
2.9
通讯作者：
Cassidy, D. B.
中科院分区：
文献类型：
--
作者：
Jones, A. C. L.;Hisakado, T. H.;Cassidy, D. B.
长寿命的里德伯电子偶素（Ps）的产生和对激发激光频率的多普勒频移的校正是反物质引力自由落体测量和Ps光谱精确测量的关键因素。利用两步光学跃迁方法，我们制备了处于里德堡态的Ps原子，其能级达到了周期极限。使用测量的速度对光谱进行了一阶多普勒频移校正，并对15
The production of long-lived Rydberg positronium (Ps) and correction for Doppler shifts in the excitation laser frequencies are crucial elements of proposed measurements of the gravitational freefall of antimatter and for precision measurements of the optical spectrum of Ps. Using a two-step optical transition via 2P levels, we have prepared Ps atoms in Rydberg states up to the term limit. The spectra are corrected for the first-order Doppler shift using measured velocities, and the Balmer transitions are resolved for 15