Postselection effect in the spectroscopy of the helium 2 3S − 2 3P transition

The first one is the final data, and the subsequent ones are the upper-level data from which this data is derived. Perform Lorentz fitting on count, and then subtract the recoil shift to obtain the corresponding relative frequency.首份为最终数据集，其余数据均为衍生该数据集的上层原始数据。对计数数据执行洛伦兹拟合，随后减去反冲频移，即可得到对应的相对频率。