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

我们正在研究原子和分子中电子和正电子（电子的反粒子）的散射。我们运行大规模的计算机程序来计算当自由电子和正电子与气体中的原子和分子碰撞时会发生什么。我们与实验小组密切合作，测量这些过程，以了解它们所涉及的基本物理。这有助于我们开发更好的理论模型，以尽可能详细地描述这些碰撞的量子力学水平。我们还利用我们的计算数据来帮助建立一个x射线探测器的模型，这个探测器被称为气体比例闪烁计数器，例如用于卫星上的x射线天文学。这些数据对于开发更好的光源和等离子显示面板也很重要。

We are investigating the scattering of electrons and positrons (which are the antiparticles of electrons) from atoms and molecules.  We run large-scale computer programs to calculate what happens when free electrons and positrons collide with atoms and molecules in a gas.  We work closely with experimental groups measuring these processes in order to understand the fundamental physics which they involve.  This helps us to develop better theoretical models to describe these collisions at the most detailed quantum mechanical levels possible.  We also use our calculated data to help model an x-ray detector called a gas proportional scintillation counter which are used in x-ray astonomy aboard satellites, for example.  These data are also important for developing better lighting sources and plasma display panels.