Observations of Recombination Population ofn=2Excited States ofAr16+in Tokamak Plasmas

E. Källne, J. Källne, A. Dalgarno, E. S. Marmar, J. E. Rice, A. K. Pradhan
1984 Physical Review Letters  
Results from the first radial measurements of the n = 2 to n = 1 x-ray transitions of high-Z elements in deuterium tokamak plasmas are presented. The observed line intensity ratios cannot be explained by electron-impact excitation and dielectronic recombination processes. Radiative and charge-transfer recombination are proposed as additional population mechanisms. The emission lines emitted in the cascade following capture constitute a unique diagnostic probe of the neutral component of plasmas.
doi:10.1103/physrevlett.52.2245 fatcat:va3o7gso6vhwdnrg3m5bsjvdb4