A MULTIGROUP RADIATION ANALYSIS OF THE LIGHT-ION BEAM ENERGY-CONVERSION INTO X-RAYS

Recently, we have developed a one-dimensional radiation-hydrodynamics code called SARA that implicitly solves the multigroup radiation transport equations. A high-order differencing algorithm as well as multifrequency-grey synthetic acceleration techniques are used to obtain a robust algorithm that can be extensively used for radiation energy transport problems and radiative regimes. The major goal of writing this code has been to explore the performance of the indirect-drive light ion beam capsules. Numerical results show that the efficiency of the energy conversion into soft X rays and the power flux amplification factor are high enough to efficiently compress the fuel capsule for a wide range of ion beam parameters. © 1990, Cambridge University Press. All rights reserved.