ABSTRACT
The charged-particle transport and energy deposition plays an important role in the energy transport along the different phases of the inertial confinement fusion capsule dynamics. The basic feature of the charged-particle slowing down is the Coulomb interaction with the background plasma. As a result of the long range of the Coulomb forces, the test particle suffers many small deviations with a small energy loss, in such a manner that close encounters with large-angle scattering are rare events. Morel extended Alcouffe's method to highly anisotropic problems, such as charged-particle transport problems, developing a diffusion synthetic acceleration scheme that accelerates the zero and the first-order moments of the flux. As has been pointed out in the former section, negative fluxes can appear in charged-particle transport problems if diamond difference differencing schemes are used, which completely destabilize the discrete solution unless a negative flux fix up is used.
