11:30 AM - 11:45 AM
[PEM26-10] A self-consistent model of helicon plasma production
In previous, we studied the helicon wave propagation and the process of plasma heating. And we showed the efficiency of mode conversion in bulk plasma depends strongly on the magnitudes of dissipations. However, there is a problem that has not been much studied: How do the helicon and TG modes influence the plasma density, electron temperature and their profiles? While the helicon mode is absorbed in the bulk plasma, the TG mode is mostly absorbed near the edge of the plasma. The local power deposition in a helicon plasma is mostly balanced by collision loss. This local power balance can give rise to an inhomogeneous electron temperature profile which is related to time evolution of density profile. In our study, we construct a self-consistent discharge model which includes wave excitation, classical electron heat transfer, and diffusion of charged particles.