Topic/Type: 1.2 Fusion Plasmas (magnetic & inertial confinement), Poster
L.S.Taleb Miandehy, A.Ghasemizad
Physics Department, University of Guilan
Plasma heating by charged particles and neutrons, energy exchange between electrons and ions and radiative losses are the primary mechanisms determining the ignition conditions in a thermonuclear plasma.
In this paper, we have studied the energy deposition of charged particles and neutrons in an inertial confinement fusion plasma and their physical effects on fuel ignition. The energy deposition of charged particles from an ICF pellet has estimated using small angle binary collision approximation for Coulomb scattering from electrons and ions, elastic nuclear scattering and collective plasma effects. We know the effects of large-angle scattering is important for plasma for which the Coulomb logarithm is of order 1. these effects use in calculating the range R and ρR(fuel areal density) of ICF plasma. We found these effects reduce the thermalization distance in the plasma and increase the fraction of energy deposited to ions. Also in the context of inertially confined fusion plasma and specially in d-t reaction which d+t → n+∝+17.6 MeV, it involves the deposition of energy from alpha in the fuel during initial cold and compressed state and then during the evolution to full ignition and burn.