Fast ignition relevant study of the flux of high intensity laser-generated electrons via a hollow cone into a laser-imploded plasma

• DOI: 10.1063/1.2834727
• Publication Date: 2008-02-15T23:40:07Z
• Authors: M. H. Key; J. C. Adam; K. U. Akli; M. Borghesi; M. H. Chen; R. G. Evans; R. R. Freeman; H. Habara; S. P. Hatchett; J. M. Hill; A. Heron; J. A. King; R. Kodama; K. L. Lancaster; A. J. MacKinnon; P. Patel; T. Phillips; L. Romagnani; R. A. Snavely; R. Stephens; C. Stoeckl; R. Town; Y. Toyama; B. Zhang; M. Zepf; P. A. Norreys
• Keywords: Implosion

An integrated experiment relevant to fast ignition . A Cu-doped deuterated polymer spherical shell target with an inserted hollow Au cone is imploded by a six-beam 900-J, 1-ns laser. 10-ps, 70-J laser pulse focused into the at time of peak compression. The flux high-energy electrons through material determined from yield CuKα fluorescence comparison Monte Carlo model. are estimated carry about 15% energy. Collisional and Ohmic heating modeled, effects shown be relatively unimportant. electron spectrometer shows significantly greater reduction transmitted than calculated in Enhanced scattering instability-induced magnetic fields suggested. extension this fluor-based technique measurement coupling efficiency hot spot future larger-scale experiments outlined.