American Nuclear Society

Home / Publications / Journals / Fusion Science and Technology / Volume 49 / Number 2T

Overview of Plasma Edge Physics

Bernhard Unterberg

Fusion Science and Technology / Volume 49 / Number 2T / February 2006 / Pages 215-233

Technical Paper / Plasma and Fusion Energy Physics - Edge Physics and Exhaust /

Basic properties of the plasma edge in magnetically confined fusion plasmas are summarized. Starting from the magnetic topology of tokamaks we describe the transport of the scrape-off layer including drifts, the transition to high recycling and detached plasma regimes typical for divertors and the consequences of the electrostatic Debye sheath in front of the plasma facing components. The transport of the fuel neutrals (hydrogen atoms and molecules) is described and the concept of power exhaust from line radiation of impurities at the plasma edge is introduced.

Questions or comments about the site? Contact the ANS Webmaster.