Ignition conditions for magnetized target fusion in cylindrical geometry

Abstract

Abstract. Ignition conditions in axially magnetized cylindrical targets are investigated by examining the thermal balance of assembled DT fuel congurations at stagnation. Special care is taken to ade-quately evaluate the energy fraction of 3.5 MeV alpha particles deposited in magnetized DT cylinders. A detailed analysis of the ignition boundaries in the R;T parametric plane is presented. It is shown that the fuel magnetization allows a signicant reduction of the R ignition threshold only when the condition BR & 6 105 G cm is fullled (B is the magnetic eld strength and R is the fuel radius). 1.