Gyrokinetic approach to the propagation of electromagnetic waves in nonuniform bounded plasma slabs
A new code, SEMAL, has been developed which solves the linearised Vlasov-Maxwell wave equations to all orders in Larmor radii. Arbitrary density and temperature profiles, as well as non-uniform magnetic fields, are considered in slab geometry. The vacuum regions adjacent to the plasma slab are limited by perfectly conducting walls and contain an antenna as an excitation source. The linear response is obtained by solving the system of one first-order and two second-order integro-differential equations using a non-polluting finite element discretisation. The general equations in the Fourier space, derived in a new comprehensive way, and their inverse transform, using k(y) = 0, are described as well as the convergence and non-polluting properties of the method. The results concerning the influence of alpha particles on ICRF heating schemes for ITER are presented, and it is shown that small alpha concentrations can alter the steady-state operation envisaged with ICRF fast wave current drive.
Bibliographic Reference: Article: Computer Physics Communications, Vol. 84 (1994) pp. 226-242
Record Number: 199510056 / Last updated on: 1995-01-10
Original language: en
Available languages: en