期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1989
卷号：12
DOI：10.1155/S0161171289000931
出版社：Hindawi Publishing Corporation
摘要：A study is made of the propagation of ion-acoustic whistlers in the
atmosphere including the effects of negative ions. The dispersion relation, phase and
group velocities of whistlers are discussed. It is shown that the presence of
negative ions introduces a critical frequency which, for equal ionic masses, is equal
to the ion-cyclotron frequency. Special attention is given to the group travel time
of whistlers at mid-latitude and equator so that the role of negative ions on the
group travel time can be determined. The cyclotron damping of whistlers in the
presence of negative ions has been studied. The velocity distribution, total
attenuation and the induced magnetic field are calculated from the temporal as well as
spatial cyclotron damping. It is suggested that the attenuation of whistlers may
cause heating of the ionosphere. It is also indicated that the measurement of the
group travel time from its source to the observer at the satellite would help to
diagnose the ionospheric parameters. The results of the analysis are presented by
several graphical presentations.
