On the energy confinement times of tokamaks
Abstract
A thermal diffusion coefficient is proposed which gives a reasonable explanation for the empirical scaling law of the energy confinement times of tokamaks, including the ISXA tokamak with its relatively low toroidal magnetic field. In the limit where electron plasma frequency exceeds cyclotron frequency, the confinement time becomes independent of the plasma density. In the same limit, the proposed coefficient essentially becomes the Bohm diffusion coefficient.
 Publication:

Nuclear Fusion
 Pub Date:
 December 1978
 Bibcode:
 1978NucFu..18.1737H
 Keywords:

 Diffusion Coefficient;
 Plasma Control;
 Scaling Laws;
 Thermal Diffusion;
 Tokamak Devices;
 Confinement;
 Electron Energy;
 Fluctuation Theory;
 Time Response;
 Plasma Physics