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Abstract

This paper analyses the propagation and the absorption of ion Bernstein waves (IBW) in a realistic tokamak equilibrium. Hamiltonian equations for the ray trajectories are solved numerically, taking the hermitean part of the electrostatic dispersion function as Hamiltonian, while the absorption of the wave is accounted for by the anti-hermitean part of the dispersion function, which is important near the ion-cyclotron resonance. A simplified form of the hermitean part of the dispersion relation makes possible an expansion for large values of k(perpendicular).rho(i) and hence an analytical integration of the ray equations. Near the resonant layer the anti-hermitean part of the dispersion function is retained and a direct evaluation of the power absorption in toroidal geometry is given.

Additional information

Authors: CARDINALI A, ENEA, Centro Ricerche Energia Frascati, Roma (IT);ROMANELLI F, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Report: RT/NUCL/90/12 EN (1990) 10 pp.
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199210166 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en