Electron-beam energy deposition modeling for the KrF laser

A 3-D Monte Carlo electron-beam energy deposition code is used to study the effects of e-beam voltage, gas density, gas mix, foil material, and laser geometry on the uniformity of energy deposition in large KrF laser amplifiers. For inertial confinement fusion applications, large KrF laser amplifiers may ultimately be feasible, if, among other factors, uniform and efficient pumping by a relativistic electron beam can be achieved in practice. Counterposed electron beams is one means which has been under consideration for some time. Parametric studies were performed to determine the trade-off between voltage, density, and amplifier width for specific uniformity and efficiency requirements. Model calculations were also performed for conditions reported in the literature and compared to the experimental results and other models