Effects of nuclear elastic scattering and modifications of ion-electron equilibration power on advanced-fuel burns

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6218693

Galambos, J D

The effects of Nuclear Elastic Scattering (NES) of fusion products and modifications of the ion-electron equilibration power on D-T and D-based advanced-fuel fusion plasmas are presented here. The processes causing the modifications to the equilibration power included here are (1) depletion of low-energy electrons by Coulomb collisions with the ions, and (2) magnetic field effects on the energy transfer between the ions and the electrons. Both NES and the equilibration modifications affect the flow of power to the plasma ions, which is an important factor in the analysis of advanced-fuels. It is found that the most important effect of NES is to increase the percentage of fusion product energy deposited to the ions by up to 30%, which allows larger ion-electron temperature separations (T/sub i/T/sub e/) for which ignition can occur. That is, the increase in the flow of power to the ions with NES included can offset increases in the flow of power from the ions to the electrons, and thus maintain a net positive flow of power to the ions for lower T/sub i//T/sub e/ ratios compared to the case with no NES. It was also determined that the dominant modification to the equilibration power is due to the magnetic field effects. These effects cause an increase in the equilibration power (up to 20%) and tend to decrease the allowable T/sub i//T/sub e/ for ignition.

• Research Organization: Illinois Univ., Urbana (USA). Dept. of Electrical Engineering
• OSTI ID: 6218693
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
BREMSSTRAHLUNG
COLLISIONS
CYCLOTRON RADIATION
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELECTRON-ION COLLISIONS
HEAVY ION FUSION REACTIONS
ION COLLISIONS
MAGNETIC FIELDS
NUCLEAR REACTIONS
RADIATIONS
SCATTERING