INVESTIGATION OF DYNAMIC CHARACTERISTICS OF INERTIAL CONFINE-MENT FUSION DENSE, TWO-TEMPERATURE PLASMAS

Abstract

In this paper the dynamic characteristics of non-isothermal dense deuterium-tritium plasmas were studied. Based on the effective interaction potentials between particles, the Coulomb logarithm for a two-temperature nonisothermal dense plasma was obtained. These potentials take into consideration long-range multi-particle screening effects and short-range quantum-mechanical effects in two-temperature plasmas. Stopping power and energy loss in such plasmas were studied using the Coulomb logarithm. The obtained data show that the transport properties of dense plasma can be adequately expressed in terms of the Coulomb logarithm based on the effective potentials. It is shown that at high velocities the fast particles weakly interacted with the environment. As they slowed down, i.e., they reduce their energy, they begin to give up kinetic energy, so at low energies an absorption peak is observed. Within the limits when fast particles have a very low velocity, the kinetic energy becomes comparable with the thermal energy of the environment, i.e. the difference in energies becomes small, the velocity of the given energy decreases. Knowledge of the ranges and energy release profiles of heavy, charged particles in a plasma will allow us to more accurately determine the parameters of the design of a thermonuclear target.

Keywords: Dense plasma, inertial confinement fusion, Coulomb logarithm, effective potential, stopping power.