caa a22 4500 386367655 CHVBK 20180307111942.0 cr unu---uuuuu 161130e198908 xx s 000 0 eng 10.1017/S0022377800014240 doi S0022377800014240 pii (NATIONALLICENCE)cambridge-10.1017/S0022377800014240 The dispersion relation and the dielectric tensor of inhomogeneous magnetized plasmas [Elektronische Daten] Electromagnetic-wave propagation in inhomogeneous magnetized plasmas is studied. Two different approaches to the subject are discussed and compared. Explicit expressions for the dielectric tensor components are derived following an established procedure that takes into account the effects of the gradients of plasma parameters, and are shown to possess non-resonant contributions to the anti-Hermitian parts. General and explicit expressions are also derived by following a different approach that has recently appeared in the literature, and are shown to possess satisfactory symmetry properties leading to anti-Hermitian parts comprising only resonant terms. The simple case of high-frequency waves in the ordinary mode propagating perpendicularly to the ambient magnetic field is presented as an example in order to show that the use of the dielectric tensor derived using the second method correctly describes wave absorption and/or amplification, eliminating the feature of non-resonant absorption that arises from the use of the first method. Copyright © Cambridge University Press 1989 Fo. R. A. Caldela Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil Schneider R. S. Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil Ziebell L. F. Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil Journal of Plasma Physics Cambridge University Press 42/1(1989-08), 165-175 0022-3778 42:1<165 1989 42 PLA https://doi.org/10.1017/S0022377800014240 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022377800014240 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fo R. A. Caldela Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil NATIONALLICENCE 700 1- Schneider R. S. Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil NATIONALLICENCE 700 1- Ziebell L. F. Instituto de Física, UFRGS, Caixa Postal 15051, 91500 Porto Alegre, RS, Brasil NATIONALLICENCE 773 0- Journal of Plasma Physics Cambridge University Press 42/1(1989-08), 165-175 0022-3778 42:1<165 1989 42 PLA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge