Collective stopping power in laser driven fusion plasmas for block ignition

Fast ignition of fusion targets by laser-driven electrons

We present hybrid PIC simulations of fast electron transport and energy deposition in pre-compressed fusion targets, taking full account of collective magnetic effects and the hydrodynamic response of the background plasma. Results on actual ignition of an imploded fast ignition configuration are shown accounting for the increased beam divergence found in recent experiments [J.S. Green et al., ...

Relativistic laser channeling in plasmas for fast ignition.

We report an experimental observation suggesting plasma channel formation by focusing a relativistic laser pulse into a long-scale-length preformed plasma. The channel direction coincides with the laser axis. Laser light transmittance measurement indicates laser channeling into the high-density plasma with relativistic self-focusing. A three-dimensional particle-in-cell simulation reproduces th...

Stopping power for deuterons in partially ionized Al plasmas

Avalanche Boron Fusion by Laser Picosecond Block Ignition with Magnetic Trapping for Clean and Economic Reactor

Measured highly elevated gains of proton-boron (HB11) fusion [1] confirmed the exceptional avalanche reaction process [2][3] for combination the non-thermal block ignition using ultrahigh intensity laser pulses of picoseconds duration. The ultrahigh acceleration above 10 20 cm/s 2 for plasma blocks was theoretically and numerically predicted since 1978 [4] and in measured [5] exact agreement [6...

Section 2 PROGRESS IN LASER FUSION 2.A Parametric Instabilities Driven by Two Pumps in Laser-Fusion Plasmas

Parametric instabilities of importance to laser-plasma interactions in laserfusion experiments are usually analyzed assuming only one laser beam (pump) drives each instability. In actual experiments, however, multiple laser beams may overlap in a localized region of the fusion target corona, where parametric instabillties may be driven by more than one pump. In the simplest case, shown in Fig. ...