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| Titel |
A linear model for amplitude modulation of Langmuir waves in weak electron-beam plasma interaction |
| VerfasserIn |
K. Baumgärtel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 31, no. 1 ; Nr. 31, no. 1 (2013-01-04), S.31-38 |
| Datensatznummer |
250017315
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| Publikation (Nr.) |
 copernicus.org/angeo-31-31-2013.pdf |
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| Zusammenfassung |
| A simple linear approach to the phenomenon of amplitude modulation of
Langmuir waves in weak beam plasma interaction is presented. During the short
growth phase of the instability and within the longer period after
saturation, the waves are described by their linear kinetic dispersion properties.The
amplitude modulation appears as result of the beating of waves with different
wavelengths and amplitudes that have grown from noise in the initial phase.
The Langmuir wave fields are calculated via FFT (fast Fourier transform) technique. The resulting
waveforms in temporal representation are quite similar to those observed by
spacecraft. |
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