Investigations on particle removal processes in the ALT-II toroidal belt limiter scoop
In a first approximation a pump limiter removes the flux of particles entering the throat with a probability which depends on the conductance between neutraliser plate and pump and the throat conductance. This picture is altered if the recycling of particles at the limiter front and processes inside the throat become important, which is the topic of this study. The relevant processes are ionisation by electron impact and charge exchange, dissociation and finally, at highest fluxes, change of the flow pattern inside the scoop. The result of these processes is expressed as a change of the throat conductance.
Bibliographic Reference: Article: Proceedings of the 20th European Conference on Controlled Fusion and Plasma Physics, Vol. II (1993) pp. 659-662
Record Number: 199311134 / Last updated on: 1994-11-29
Original language: en
Available languages: en