Ion Atom Collisions: Correlated Systems (Physics)

在过去的二十年里，快速裸离子束的发展使得原子物理学家能够在非平凡的离子-原子反应中改变耦合常数，并且已经学到了很多东西。在原子中，电子提供了广泛的速度标度，因此一直有动力专注于开发有效的计算机代码，以同时描述广泛能量区域中的激发、电离和电荷转移。主要研究人员为这类研究选择的方法是波函数在希尔伯特基函数的截断空间中的变分展开。到目前为止，主要研究者所做的所有工作都是在独立粒子模型近似下进行的。在本工作中，将发展一种求解完全关联两电子问题的强迫脉冲方法。

The development of beams of fast bare ions in the last two decades has allowed atomic physicists to vary the coupling constant in non-trivial ion-atom reactions, and much has been learned. In atoms, the electrons provide a wide range of velocity scales, and thus there has been motivation to concentrate on developing efficient computer codes to simultaneously describe excitation, ionization, and charge transfer in a broad energy region. The method chosen by the principal investigators for such studies has been a variational expansion of the wavefunction in a truncated space of Hilbert basis functions. Until now, all work done by the principal investigators has been carried out in the independent particle model approximation. In the present work, the Forced Impulse Method, which allows the solution of the fully correlated two- electron problem, will be developed.