Scattering of an electromagnetic wave in a plasma close to a cut off layer : Application to fluctuation measurements
The problem of wave scattering by fluctuations close to a cut-off layer is investigated. A generalised wavenumber selection rule has been introduced. It provides a simple tool to analyse the localisation of scattering and to define which turbulence wavenumbers are at the origin of the observed scattered signal. Moreover, absolutely calibrated measurement of fluctuation rates can be envisaged. Applications to four diagnostics (one and two antennae reflectometry, correlation reflectometry and cross-polarisation scattering) are discussed.
Bibliographic Reference: Report: EUR-CEA-FC-1412 EN (1990) 27 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199110308 / Last updated on: 1994-12-02
Original language: en
Available languages: en