Measuring one-dimensional and two-dimensional impurity density profiles on TEXTOR using combined charge exchange-beam emission spectroscopy and ultrasoft x-ray tomography

2004/10/01 by M. De Bock, K. Jakubowska, M. von Hellermann +4 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Magnetic confinement fusion research #Nuclear Physics and Applications

paper · doi:10.1063/1.1787600

openalex publication_date 2004/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11

Abstract

Two techniques are presented that allow us to measure impurity density profiles in the TEXTOR tokamak plasma. The one-dimensional profiles are gathered by charge exchange recombination spectroscopy (CXRS) in combination with beam emission spectroscopy (BES). Combining CXRS and BES eliminate the need for absolute calibration. For two-dimensional profiles an ultrasoft x-ray tomography system has been developed. The system is spectrally resolved and produces local emissivity profiles of several ionization stages of impurities. Both systems are presently being commissioned. They are complementary and give an insight into the impurity distribution and transport in plasmas.

Cited by

• Method to obtain absolute impurity density profiles combining charge exchange and beam emission spectroscopy without absolute intensity calibration
• Consistency of atomic data for the interpretation of beam emission spectra

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