Magnetic curvature driven Rayleigh-Taylor instability revisited
The problem of incomplete finite ion Larmor radius (FLR) stabilization of the magnetic curvature driven Rayleigh-Taylor instability (RTI) in low beta plasma with homogeneous ion temperature is investigated. For this purpose a model hydrodynamic description of nonlinear flute waves with arbitrary...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2011-02-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/29/411/2011/angeo-29-411-2011.pdf |
| _version_ | 1818353146844413952 |
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| author | O. A. Pokhotelov O. G. Onishchenko O. G. Onishchenko |
| author_facet | O. A. Pokhotelov O. G. Onishchenko O. G. Onishchenko |
| author_sort | O. A. Pokhotelov |
| collection | DOAJ |
| description | The problem of incomplete finite ion Larmor radius (FLR)
stabilization of the magnetic curvature driven Rayleigh-Taylor instability
(RTI) in low beta plasma with homogeneous ion temperature is investigated.
For this purpose a model hydrodynamic description of nonlinear flute waves
with arbitrary spatial scales compared to the ion Larmor radius is
developed. It is shown that the RTI is not stabilized by FLR effects in a
plasma with cold electrons when the ratio of characteristic spatial scale of
the plasma inhomogeneity to local effective radius of curvature of the
magnetic field lines is larger than 1/4. The crucial role in the absence of
the complete FLR stabilization plays the contribution of the compressibility
of the polarization part of the ion velocity. |
| first_indexed | 2024-12-13T19:04:54Z |
| format | Article |
| id | doaj.art-5dc462936cec4f09a456acdbc2a4848c |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-13T19:04:54Z |
| publishDate | 2011-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-5dc462936cec4f09a456acdbc2a4848c2022-12-21T23:34:34ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762011-02-012941141310.5194/angeo-29-411-2011Magnetic curvature driven Rayleigh-Taylor instability revisitedO. A. Pokhotelov0O. G. Onishchenko1O. G. Onishchenko2Automatic Control and Systems Engineering, University of Sheffield, Mappin str., S1 3JD Sheffield, UKInstitute of Physics of the Earth, 10 B. Gruzinskaya str., 123995 Moscow, Russian FederationSpace Research Institute, 84/32 Profsouznaya str., 117997 Moscow, Russian FederationThe problem of incomplete finite ion Larmor radius (FLR) stabilization of the magnetic curvature driven Rayleigh-Taylor instability (RTI) in low beta plasma with homogeneous ion temperature is investigated. For this purpose a model hydrodynamic description of nonlinear flute waves with arbitrary spatial scales compared to the ion Larmor radius is developed. It is shown that the RTI is not stabilized by FLR effects in a plasma with cold electrons when the ratio of characteristic spatial scale of the plasma inhomogeneity to local effective radius of curvature of the magnetic field lines is larger than 1/4. The crucial role in the absence of the complete FLR stabilization plays the contribution of the compressibility of the polarization part of the ion velocity.https://www.ann-geophys.net/29/411/2011/angeo-29-411-2011.pdf |
| spellingShingle | O. A. Pokhotelov O. G. Onishchenko O. G. Onishchenko Magnetic curvature driven Rayleigh-Taylor instability revisited Annales Geophysicae |
| title | Magnetic curvature driven Rayleigh-Taylor instability revisited |
| title_full | Magnetic curvature driven Rayleigh-Taylor instability revisited |
| title_fullStr | Magnetic curvature driven Rayleigh-Taylor instability revisited |
| title_full_unstemmed | Magnetic curvature driven Rayleigh-Taylor instability revisited |
| title_short | Magnetic curvature driven Rayleigh-Taylor instability revisited |
| title_sort | magnetic curvature driven rayleigh taylor instability revisited |
| url | https://www.ann-geophys.net/29/411/2011/angeo-29-411-2011.pdf |
| work_keys_str_mv | AT oapokhotelov magneticcurvaturedrivenrayleightaylorinstabilityrevisited AT ogonishchenko magneticcurvaturedrivenrayleightaylorinstabilityrevisited AT ogonishchenko magneticcurvaturedrivenrayleightaylorinstabilityrevisited |