Fokker Planck kinetic modeling of suprathermal alpha-particles in a fusion plasma
arXiv:1402.6191 · doi:10.1016/j.jcp.2014.08.033
Abstract
We present an ion kinetic model describing the ignition and burn of the deuterium-tritium fuel of inertial fusion targets. The analysis of the underlying physical model enables us to develop efficient numerical methods to simulate the creation, transport and collisional relaxation of fusion reaction products (alpha-particles) at a kinetic level. A two-energy-scale approach leads to a self-consistent modeling of the coupling between suprathermal alpha-particles and the thermal bulk of the imploding plasma. This method provides an accurate numerical treatment of energy deposition and transport processes involving suprathermal particles. The numerical tools presented here are validated against known analytical results. This enables us to investigate the potential role of ion kinetic effects on the physics of ignition and thermonuclear burn in inertial confinement fusion schemes.
Cited by in corpus (7)
- Species separation and modification of neutron diagnostics in inertial-confinement fusion
- An Adaptive, Implicit, Conservative 1D-2V Multi-Species Vlasov-Fokker-Planck Multiscale Solve in Planar Geometry
- An Eulerian Vlasov-Fokker-Planck Algorithm for Spherical Implosion Simulations of Inertial Confinement Fusion Capsules
- Kinetic simulations of fusion ignition with hot-spot ablator mix
- An extended hydrodynamics model for inertial confinement fusion hohlraums
- Computational Statistical Mechanics of a confined, three-dimensional Coulomb gas
- A Langevin approach to multi-scale modeling