Ion Acceleration in High Contrast High Intensity Laser Interaction with Thin Film and Membrane Targets
POSTER
Abstract
We present the experimental results on ions acceleration from thin film and membrane targets using the 300TW 30fs HERCULES Laser Facility. The utilization of an F/1 parabolic mirror allow for on target intensities of up to 1022 W/cm2. Use of dual plasma mirrors as well as crossed-polarized wave generation allows for the ASE pedestal to peak intensity contrast of over 10-13. We perfomed measurements of protons from the back side of foils as well as ions generated from 20-200 nanometers thickness silicon nitride membranes using a Thomson parabola spectrometer coupled to a microchannel plate with readout to a CCD. Detailed 2D-PIC computer modeling of these interactions will also be presented and compared to the experimental data.
*This work was supported by the NSF grant PHY-0114336.