We report measurements of low energy positron scattering from neon, with the first measurements of absolute differential cross sections (DCSs) and of state-selective electronic excitation. These measurements are compared to calculations using the relativistic optical potential (ROP) technique, as well as other recently published theoretical calculations. At the lowest energies, experimental DCS data are fitted to extract scattering phase shifts, which can be compared to theoretical values and also used to generate DCS values over the full angular range. For the most part we find good accord in the two descriptions of the scattering processes, with some key disagreements. An analysis of possible sources of systematic error has also been presented, in light of the discrepancies.

我们报告了对氖的低能正电子散射的测量，首次测量了绝对微分横截面 (DCS) 和状态选择性电子激发。这些测量结果与使用相对论光势 (ROP) 技术的计算以及其他最近发表的理论计算进行了比较。在最低能量下，拟合实验 DCS 数据以提取散射相移，可以将其与理论值进行比较，也可用于在整个角度范围内生成 DCS 值。在大多数情况下，我们发现散射过程的两种描述非常吻合，但有一些关键的分歧。鉴于这些差异，还对系统误差的可能来源进行了分析。