DT alpha energy deposition in a magnetized plasma

Summary form only given. We present a 3D code for calculating the energy deposited as a function of the position within the plasma, assuming an arbitrary magnetic field configuration. This code tracks the very complex trajectories of the alphas, tabulating the energy along the path and terminating the trajectory when an alpha leaves the target plasma or slows to thermal velocity. The amount of energy deposited in the plasma depends on the temperature, density and radius of the plasma and on the strength and configuration of the field. We report some of our particle tracking calculations and discuss various methods for handling DT alpha energy deposition in calculations for Magnetized Target Fusion (MTF). In this case, we show the fractional deposition, averaged over volume and angle, in a homogeneous magnetized plasma with an azimuthal field and point up that the important parameter for enhancement is the field times target radius. For BR>0.5 MGcm, significant enhancement occurs and for BR>5 MGcm greatly increases energy.