Ray tracing in dissipative media

Details Ray tracing in dissipative media Ray tracing in dissipative media

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984angeo...2...57r&link_type=abstract

Annales Geophysical (ISSN 0755-0685), vol. 2, Jan.-Feb. 1984, p. 57-60.

Physics

Optics

3

Anisotropic Media, Dissipation, Geometrical Optics, Radio Scattering, Ray Tracing, Wave Packets, Equations Of Motion, Group Velocity, Plasma Waves, Wave Propagation

Scientific paper

The motion of a wave packet in anisotropic homogeneous and weakly inhomogeneous dissipative media is investigated analytically in the framework of geometric optics. The equations of motion are derived without introducing complex space coordinates, considering first the homogeneous and then the inhomogeneous case. These equations are shown to be generalized versions of the Hamilton equations of geometric optics. The results of a numerical evaluation of the dispersion function of upper-hybrid waves in a two-temperature electron plasma are presented graphically. The group velocities of weakly damped waves are found to be significantly affected, illustrating the need to take dissipation into account.

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