Positron and Electron Scattering by Atoms and Molecules (Physics)

为了更深入地了解反物质与物质的基本相互作用，建议通过实验研究原子和分子对正电子和电子的散射。提出的研究包括测量原子和分子对正电子的总散射、微分散射和非弹性散射，以及寻找正电子散射共振。研究计划的一个重要组成部分是在相同的设备上使用相同的技术进行相应的电子散射比较测量。将获得许多科学和技术领域感兴趣的信息。例如，对于天体物理学家来说，原子和分子氢对正电子的散射对于解释在太阳耀斑和我们银河系中心区域观测到的正电子湮灭伽马射线是很重要的。

It is proposed that the scattering of positrons and electrons by atoms and molecules be studied experimentally in order to learn more about basic interactions of antimatter with matter. The proposed research includes measurement of total, differential, and inelastic scattering of positrons by atoms and molecules, as well as a search for positron scattering resonances. An important part of the research program is to make corresponding electron scattering comparison measurements in the same apparatus using the same technique. Information will be obtained that is of interest in many areas of science and technology. For example, the scattering of positrons by atomic and molecular hydrogen is of importance to astrophysicists for the interpretation of positron annihilation gamma rays observed in solar flares and in the central region of our galaxy.