This is an archival copy of the Visualization Group's web page 1998 to 2017. For current information, please vist our group's new web page.

Wave functions for a quantum mechanical system of a charged particle colliding with a model two-electron atom. The vertical axis represents the coordinate of the incident particle, and the other two axes are the electron coordinates. In the left panel, the collision energy is lower than the breakup threshold; in the center panel, the collision energy is sufficient to singly ionize the atom; in the right panel, the energy is sufficient to cause complete fragmentation of the system. More information.