Laser implosion of high--aspect-ratio targets produces thermonuclear neutron yields exceeding 1012 by use of shock multiplexing

Neutron yields in excess of 1012 were achieved by the twelve-beam green GEKKO XII laser by choice of a shock multiplexing implosion mode as predicted by a simulation code hImIco. The first half of a Gaussian pulse was used to achieve a tailored implosion with the shock multiplexing. The implosion mode is sensitive to the matching between the implosion time and the laser pulse. The simulation result suggests that the compression with a large deceleration at the stagnation phase due to the shock-wave multiplexing plays an important role to get high neutron yields without pusher-fuel mixing in high--aspect-ratio D-T shell targets