Line-shape modeling in microwave spectroscopy of the positronium n = 2 fine-structure intervals
Line-shape modeling in microwave spectroscopy of the positronium n = 2 fine-structure intervals
复制标题
正电子素 n = 2 精细结构区间的微波光谱线形建模
DOI：
10.1103/physreva.104.062810
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发表时间：
2021
影响因子：
2.9
通讯作者：
Akopyan L
中科院分区：
文献类型：
--
作者：
Akopyan L
我们报道了用于测量精细结构间隔的正电子偶素实验的数值模拟。模拟包括所有20个状态之间的所有可能的干涉效应，以及激光激发的流形，以及实验中使用的波导中存在的电场和磁场的表示。我们发现，射频波从真空室壁的反射是一个可能的解释先前观察到的线形失真和移位。我们还描述了几种系统效应，包括量子干涉产生的效应，这些效应可能对未来的测量具有重要意义。
We report numerical simulations of positronium experiments designed to measure thefine-structure intervals. The simulations include all possible interference effects between all 20 states in theand laser-excitedmanifolds as well as representations of the electric and magnetic fields present in the waveguides used in the experiments. We find that rf wave reflection from the vacuum chamber walls is a possible explanation of previously observed line-shape distortions and shifts. We also characterized several systematic effects, including those arising from quantum interference, that are likely to be significant for future measurements.