“…These inelastic processes ultimately lead to radiation losses and new plasma formation. The edge temperature is in fact determined by the power conducted and convected through the boundary layer into the edge plasma, on the one side, and by the power consumed in dissociating, ionizing, exciting and heating the recycled gas and wall released impurities, and in radiating off energy in the edge plasma, on the other side [23]. A higher particle and energy flux into the edge region increases the quantity of recycled gas and the release of impurity species from the walls, which, through the above mentioned processes, then tends to decrease the edge temperature.…”