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URN to cite this document: urn:nbn:de:bvb:703-epub-7237-3
Title data
Schamel, Hans ; Chakrabarti, Nikhil:
On the Evolution Equations of Nonlinearly Permissible, Coherent Hole Structures Propagating Persistently in Collisionless Plasmas.
In: Annalen der Physik.
Vol. 535
(2023)
Issue 8
.
- 2300102.
ISSN 1521-3889
DOI der Verlagsversion: https://doi.org/10.1002/andp.202300102
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Abstract
Abstract A fundamental study describing nonlinear plasma wave propagation is presented. Elementary linear wave theory describes small-amplitude random waves, but lacks information about coherent structures. This improved wave model arises from the fact that structure formation is inevitably associated with particle trapping, which can only be properly addressed by the pseudo-potential method instead of Bernstein, Greene, and Kruskal (BGK) - likemethods. Only by using this method can legitimate nonlinear dispersion relations be obtained and reconciled with trapping scenarios. This privilege is used to derive evolution equations for five structures, the derivation being simplified by the acoustic nature of the permitted modes. The focus is on a special structure, the solitary electron hole of negative polarity, with which it can explain a spacecraft observation for the first time. Furthermore, it is shown that an intrinsically nonlinear structure can become macroscopically linear and thus harmonic by suitably adjusting the trapping scenario. An example is the monochromatic ion acoustic wave that propagates at ion sound velocity without dispersion. In this literature research, it also takes a critical look at a recently awarded work.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | anomalous transport; electron holes; intermittent turbulence; phase space structures; ion holes |
| DDC Subjects: | 500 Science > 530 Physics |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors > Professur Theoretische Physik IV - Univ.-Prof. Dr. Hans Schamel Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Former Professors |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-7237-3 |
| Date Deposited: | 16 Oct 2023 05:47 |
| Last Modified: | 16 Oct 2023 05:48 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/7237 |
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