Theoretical and computational studies of electron and positron collisions with atomic and molecular systems

电子和正电子与原子和分子系统碰撞的理论和计算研究

• 批准号: RGPGP-2015-00081
• 负责人: Stauffer, Allan
• 金额: $ 1.38万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Group
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633060
• 关键词: Theoretical; computational; studies; electron; positron

Our research involves the calculation of the scattering of electrons and positrons from atomic and molecular systems. Positrons are the anti-particles of electrons and although they annihilate with electrons, they live long enough to scatter from atoms and molecules and for this scattering to be measured in the laboratory. In our calculations, we treat the positron as an electron but with the opposite electric charge. There is a simplification in that the positron is a distinct particle from those in its scattering target and therefore it cannot interchange with any of these particles the way an electron can. However, a positron and an electron can form a bound state, positronium. Positron scattering is a field of active research experimentally to investigate the interaction between matter and anti-matter and we will compare our results to these measurements to guide future studies.

我们的研究包括计算原子和分子系统中电子和正电子的散射。正电子是电子的反粒子，虽然它们与电子湮灭，但它们的寿命足够长，可以从原子和分子中散射，并且可以在实验室中测量这种散射。在我们的计算中，我们把正电子当作带相反电荷的电子。有一个简化，因为正电子是一个不同的粒子，从那些在其散射目标，因此它不能与任何这些粒子的方式交换电子可以。然而，一个正电子和一个电子可以形成一个束缚态，即正电子素。正电子散射是一个活跃的研究领域，通过实验来研究物质和反物质之间的相互作用，我们将把我们的结果与这些测量结果进行比较，以指导未来的研究。