Proceedings of the impact fusion workshop

Abstract

It is shown that large macroparticles may be accelerated up to several 100 km/sec by ultrahigh pressures generated locally through coalescing Riemann waves focused both in time and space.Focusing in time can be done by a piston with a specified programmed time dependent velocity and focusing in space by reflection from a curved concave wall.The macroparticle is accelerated by the stagnation pressure of the coalescing waves acting on its backside.The piston can be propelled by a recoil less gun driven by an intense charged particle beam.In this way the beam power can be reduced by about three orders of magnitude compared to more conventional target implosion schemes.