caa a22 4500 38636737X CHVBK 20180307111940.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1017/S0022377800013726 doi S0022377800013726 pii (NATIONALLICENCE)cambridge-10.1017/S0022377800013726 Ion-acoustic solitons in magnetized multi-component plasmas including negative ions [Elektronische Daten] A study is made of ion-acoustic solitons in a low-β magnetized plasma consisting of any number of adiabatic positive and negative ion species in addition to the presence of isothermal electrons. A KdV equation in three dimensions or KdV-ZK equation is derived. This equation admits comprehensive or rarefactive solitons propagating in any oblique direction with respect to the direction of the external magnetic field, depending on the density of the negative ion species. When the nonlinear coefficient of this equation vanishes, the nonlinear ion-acoustic wave is described by a modified KdV equation in three dimensions. This equation is also derived and its solitary-wave solutions are discussed. Both compressive and rarefactive solitons are possible. Finally, the three-dimensional stability of these solitons is investigated by the small-k perturbation expansion method of Rowlands and Infeld. Stability criteria and growth rates of instabilities are derived. Copyright © Cambridge University Press 1989 Das K. P. Instituut voor theoretische mechanika, Rijksuniversiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium Verheest Frank Instituut voor theoretische mechanika, Rijksuniversiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium Journal of Plasma Physics Cambridge University Press 41/1(1989-02), 139-155 0022-3778 41:1<139 1989 41 PLA https://doi.org/10.1017/S0022377800013726 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022377800013726 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Das K. P. Instituut voor theoretische mechanika, Rijksuniversiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium NATIONALLICENCE 700 1- Verheest Frank Instituut voor theoretische mechanika, Rijksuniversiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium NATIONALLICENCE 773 0- Journal of Plasma Physics Cambridge University Press 41/1(1989-02), 139-155 0022-3778 41:1<139 1989 41 PLA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge