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Approximate Analytic Solution for the Spatiotemporal Evolution of Wave Packets undergoing Arbitrary Dispersion | | Borge Nodland
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20 Apr 1997 | | Journal: | Phys.Rev. E55 (1997) 3647 | | Subject: | Classical Physics; Plasma Physics | physics.class-ph physics.plasm-ph | | Abstract: | We apply expansion methods to obtain an approximate expression in terms of elementary functions for the space and time dependence of wave packets in a dispersive medium. The specific application to pulses in a cold plasma is considered in detail, and the explicit analytic formula that results is provided. When certain general initial conditions are satisfied, these expressions describe the packet evolution quite well. We conclude by employing the method to exhibit aspects of dispersive pulse propagation in a cold plasma, and suggest how predicted and experimental effects may be compared to improve the theoretical description of a medium’s dispersive properties. | | Source: | arXiv, physics/9704026 | | Services: | Forum | Review | PDF | Favorites | |
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