Charge exchange spectroscopy on the Balmer-alpha-line using TEXTOR
The measurement of ion temperatures is of relevance for the understanding of fusion experiments. For this purpose charge exchange spectroscopy is used. The charge exchange spectra of H and D have been investigated and compared to other measurements. The complicating effects, the dependence of the effective emission coefficient on the collision energy and the halo effect, have been simulated numerically. For the calculation of ion temperatures correction values have been introduced. Despite the halo effect the temperature profile turned out to be almost in accordance with the real one. The measured D(alpha)-spectra have been analysed. Comparisons with neutron rate calculations and measurements of the diamagnetic energy showed good agreement. The measurements of the central toroidal rotation of the D ions agreed with measurements of light impurities. Sawtooth oscillations resulted in modulations of the parameter, but not in a change of the rotation profile.
Bibliographic Reference: Report: Jül-3375 DE (1997) 87pp.
Availability: Available from Forschungszentrum Jülich GmbH, Zentralbibliothek, 52425 Jülich (DE)
ISBN: ISSN 0944-2952
Record Number: 199711068 / Last updated on: 1997-09-23
Original language: de
Available languages: de