Study of Fast Electron Energy Deposition into Imploded High Density Plasma Using Cu-Doped CD Shell Targets

Fast electron spatial energy deposition into the imploded high density plasma has been characterized for the first time in an integrated cone-guided Fast Ignition experiment. This work uses the OMEGA beams (18kJ) for fuel assembly, and the high intensity EP beam (10ps, 0.5-1.5kJ, I$_{peak}$ $>$ 10$^{19}$ W/cm$^{2}$), focused onto the inner cone tip, to produce fast electrons. Energy deposition is diagnosed via Cu K-shell radiation from the Cu-doped CD shell. Results indicate Ka yield scaling with EP energy. Cu Ka distribution agrees with DRACO modeling. Ka images also suggest electrons being produced roughly 100$_{\mu}$m away from the cone tip, consistent with pre-plasma filling the cone. Comparison of experimental data with modeling will be presented.