Ion temperature profiles from the plasma center to the edge of ASDEX combining high and low energy CX-diagnostics
The charge exchange (CX) neutral energy distributions from ASDEX measured with the conventional neutral particle analysers (NPA) at energies above 500 eV are combined with the low energy CX spectra from the low energy neutral analyser (LENA). In the region of overlap their shapes fit each other very well. With the 3D EIRENE code the neutral gas was simulated and ion temperature T(i) profiles from the centre to the edge obtained. The T(i) values at the separatrix and the edge based on the LENA data are considerably lower than those suggested earlier from the NPA data. This is attributed to the different energy ranges - high energies for the NPA, low energies for LENA - that are used for the T(i) evaluation.
Bibliographic Reference: Article: Journal of Nuclear Materials, Vol. 196-198 (1992) pp. 1027-1031
Record Number: 199310229 / Last updated on: 1994-11-29
Original language: en
Available languages: en