Dynamic Behavior of Detached Recombining Plasmas for Plasma Heat Pulse in the Divertor Simulator NAGDIS-I|

We will report on a comprehensive study of the dynamic response of the detached recombining plasma in the linear divertor plasma simulator. The plasma heat pulse was generated by rf heating, which can give a modification of the electron distribution functions. The negative spikes were appeared in the time evolution of the Balmer series spectra, which indicate the transition between ionizing plasmas and recombining plasmas. Detailed analysis on the time evolution was done with collisional-radiative code to reproduce the time evolution of the electron temperature. Keywords: detached recombining plasma, volumetric plasma recombination, edge localized mode, divertor 1