Abstract
At the compact spherical Globus-M2 tokamak, a series of experiments was conducted to study theeffect of the injection of nitrogen on the discharge parameters. The experiments were carried out in dischargesin deuterium in the divertor configuration, and the auxiliary heating was performed by deuteriumneutral beam injection. During the nitrogen seeding, a substantial decrease in electron temperature near thedivertor was recorded as well as a sharp decrease of the heat flux onto the divertor plate, while the density andtemperature of the main plasma changed insignificantly. Simulations by the SOLPS-ITER showed a satisfactoryagreement with the experiment.
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