Fusion Space Propulsion with a Field Reversed Configuration

Abstract

The objective of this study is to examine a fusion space propulsion system using D-³He in a reversed field configuration (FRC). Such a configuration provides good confinement and high-β operation with high power densities in a compact design. The reversed field is maintained by a combination of fuel pellet injection and energetic fusion products which create an azimuthal plasma current. The shielding requirements for a design using D-³He are minimized, providing an attractive power to weight ratio. Thrust is achieved through the use of a magnetic nozzle, where propellant is mixed with cold plasma flowing along open field lines and the mixture is exhausted through the nozzle.