Observations of xenon spectra on the EAST x-ray crystal spectrometer for high-temperature plasma diagnostics

The Xe44+ 2.7203 angstrom line, which has been proposed as one of the diagnostic lines for the x-ray imaging crystal spectrometer on ITER, is observed on the EAST tokamak together with its several satellite lines. The observations are made under high electron temperature (T ( e )) conditions (core T ( e ) > 5 keV). Most of the observed xenon lines are identified by comparing the experiment results with the atomic simulation results. The first ion temperature measurements made by the xenon spectra on EAST are also reported in this article. These xenon spectra observations contribute to the justification for using xenon as the diagnostic impurity in x-ray crystal spectrometers in future reactor-scale high-temperature plasmas.

Automated summary

The Xe44+ 2.7203 angstrom line, considered as a diagnostic line for the x-ray imaging crystal spectrometer on ITER, was observed on the EAST tokamak along with its satellite lines. These observations were conducted under high electron temperature conditions. Most of the observed xenon lines were identified by comparing the experimental and simulation results. The first ion temperature measurements based on the xenon spectra were also reported in this article. These xenon spectra observations contribute to the justification for using xenon as a diagnostic impurity in future reactor-scale high-temperature plasmas.