Based on a heuristic model of the scrape-off-layer (SOL) plasma dynamics. a new type of limit-cycle-oscillation (LCO) is shown to be possible in the SOL region. The key trigger process is the positive feedback amplification of the SOL radial electric field through the SOL turbulence suppression and temperature profile steepening. This SOL-LCO can make the edge plasma inside the separa... https://www.soiebiologique.com/