The ionization dynamics of electron impact H$_{2}$ and H$_{2}$O molecules*

In the last couple of decades, (e,2e) spectroscopy has been used to investigate molecular structure. More recently, low to intermediate energy (e.g. below 500 eV) (e,2e) results have been reported for ionization of molecules. These low energy results are more sensitive to the collision dynamics of ionization, so accurate theories are in the needed to interpret the experimental data. The distorted wave impulse approximation (DWIA) and molecular three-body distorted wave (M3DW) approximation were recently introduced by our group. These approximations will be used to study the fully differential cross sections for low energy electron-impact ionization of the H$_{2}$ and H$_{2}$O molecules. The importance of the exchange distortion potential and exchange amplitude will be examined. Our theoretical results will be compared with recent experimental measurements.