NONLOCAL ELECTRON-TRANSPORT IN SPHERICAL PLASMAS

The influence of spherical geometry on nonlocal radial electron heat t ransport has been studied using perturbation analysis. The nonlocal ex pression for the radial heat flux is obtained in the limit of large io n charge. The deviation of the spherical nonlocal heat transport from the planar theory has been investigated and it has been found that the space curvature can significantly modify the heat flux compared to th e planar result when the delocalization length (that associated with t he faster electrons which dominate energy transport) is comparable to the radius. (C) 1996 American Institute of Physics.