One-dimensional modulation instability of wave packets in media with resonant dispersion
โ Scribed by S.A. Rybak; O.M. Zozulya
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 223 KB
- Volume
- 241
- Category
- Article
- ISSN
- 0378-4371
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โฆ Synopsis
Modulation instability of small-amplitude quasimonochromatic wave packets in media containing compact oscillators is analysed in the one-dimensional case. Conservative media with quadratic nonlinearity and linear nondamped oscillators are considered. Frequency range of unstable wave-packet propagation is found. It is shown that instability results from resonant longwave-short-wave interaction.
๐ SIMILAR VOLUMES
We study frequency locking and resonance of spiral waves in an active medium subjected to periodic forcing with adjustable frequency. The experiments are carried out with a modified Belousov-Zhabotinsky system whose excitability is light-sensitive. In the meander regime of compound rotation we find