Simple Neutral Density Profile Calculation for Tokamaks with lambda/sub Mfp/

摘要

A simple and expeditious technique is developed for calculating the neutral density profile in the dense region of large tokamak plasmas, where lambda/sub mfp/ much less than a. The method rests on determining the local logarithmic derivative of n sub 0 from a self-consistent calculation of the radial flux of neutrals, GAMMA, combined with the condition that NABLA . GAMMA = n sub 0 n/sub e/ (sigma v)/sub ei/. The results from this simple technique are compared with a more time-consuming Monte-Carlo calculaion, and good agreement is found. (ERA citation 03:041948)