Ignition of a Fusion Flame in DT by Nonlinear Force Driven Plasma Blocks at PW-ps Laser Irradiation

It seemed to be an impossible task thirty years ago to shine a laser beam on uncompressed solid DT and to ignite a fusion flame because of the necessary energy flux densities are in the range of more than 100MJ/cm$^{2}$ or corresponding deuterium ion current densities above 10$^{10}$ Amp/cm$^{2}$. Since PW-ps laser pulses are available now, the situation has changed, however, by inclusion of a very sophisticated method for suppressing prepulses such that relativistic self-focusing is avoided and a purely plane or similar geometry interaction as a skin layer process appears. These conditions have been verified by very special experiments in agreement with predicted theory and detailed computations [1]. This leads to the space-charge neutral plasma blocks or pistons generated by the nonlinear (ponderomotive) acceleration for producing the necessary ion current densities for the optimized energies of 80 keV to irradiate DT [2]. [1] J. Badziak, S. Glowacz, S. Jablonski, P. Parys, J. Wolowski, H. Hora, Appl. Phys. Letters\underline { }\textbf{85, }3041 (2004). [2] H. Hora, Laser and Particle Beams\textbf{ 22, }439 (2004)