Potential importance of ultra-deep penetration for operation of IFE power plants

Possibility of damage of inertial fusion energy power plants caused by ultra-deep penetration of fragments of targets with hohlraums and/or cones for fast ignition has been investigated in this study. Some issues related to the formation of high-velocity solid and liquid fragments of targets and their deceleration and heating in the reaction chamber filled with low-density Xe gas have been studied. It was found that with a Xe gas mass density of approximately 6 mu g/cm(3) and reaction chamber internal radius of 6 m, a liquid spherical gold fragment with a radius of 5-7 mu m could reach the chamber wall with a velocity >1 km/s. (c) 2016 Elsevier B.V. All rights reserved.