Heliumlike Mg XI in the divertor-injected tokamak experiment

Heliumlike Mg XI in the divertor-injected tokamak experiment

Heliumlike Mg XI in the divertor-injected tokamak experiment 150 150 UKAEA Opendata

Heliumlike Mg XI in the divertor-injected tokamak experiment

Electron-impact excitation rates for transitions in heliumlike Mg xI, calculated with the R-matrix code, are used to derive the electron-density-sensitive emission line ratio R (= f/i) and temperature sensitive ratio G [ = (f+i)/r]. A comparison of these with R and G ratios determined from x-ray spectra of the divertor-injected tokamak experiment reveals excellent agreement between theory and observation, with discrepancies of typically 3% and 9% in R and G respectively. These discrepancies correspond to variations in Ne and Te of approximately 0.1 and 0.15 dex, respectively, and hence it should be possible to use the theoretical results to derive plasma parame ters to this level of accuracy for remote sources for which no independent electron temperature amd density estimates exist, such as solar flares.

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15/09/1991