Abstract
At the outboard mid‐plane scrape‐off layer, radial transport of particles
and heat is dominated by plasma structures called filaments or blobs [1, 2].
To account for the fluctuation‐enhanced transport of particles and heat
due to filaments, a stochastic model has been developed [3].
Here, we analyse ion saturation current data from Langmuir probes in five
tokamaks in Ohmic and low confinement mode scenarios, and compare
the fitted stochastic model parameters. The tokamaks comprise Alcator
C‐Mod, DIII‐D, TCV, KSTAR and MAST/MAST‐U and the data comprise
scans in IP as well as ne.