Community Research and Development Information Service - CORDIS


The analysis of charge exchange recombination spectra represents a very challenging problem due to the presence of many overlapping spectral lines. Conventional approaches are based on iterative least squares optimisation and suffer from the two difficulties of low speed and the need for a good initial approximation to the solution. This latter problem necessitates considerable human supervision of the analysis procedure. In this paper it is shown how neural network techniques allow charge exchange data to be analysed very rapidly, to give an approximate solution without the need for supervision. The network approach is well suited to the fast intershot analysis of large volumes of data, and can be implemented readily in dedicated hardware for real-time applications. The neural network can also be used to provide the initial guess for the standard least squares algorithm when high accuracy is required.

Additional information

Authors: BISHOP C M, AEA Technology, Harwell Laboratory, Didcot, Oxon. (GB);ROACH C M, AEA Fusion, Culham Laboratory, Abingdon, Oxon. (GB);VON HELLERMANN M G, JET Joint Undertaking, Abingdon, Oxon. (GB)
Bibliographic Reference: Report: JET-P(92)90 EN (1992) 13 pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon. OX14 3EA (GB)
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