A Possible Physical Explanation for Type III ELMs in Tokamaks

摘要

The resistive interchange instability acompanied by magnetic flutter is considered as a possible candidate for the onset and development of Type III ELMs. The flutter provides the resistive driver for the interchange instability. The proposed theory allows one to derive the dependnecie of the upper boundary for Type III ELMs on Te and ne, as well as the scaling of the maplitude and the frequency of these oscillations, which are in agreement wiht the experimental results.