Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity
The ion dynamics in the distant Earth's magnetotail is studied in the case that a cross tail electric field and reconnection parity magnetic turbulence are present in the neutral sheet. A test particle simulation is performed for the ions, and moments of the ion distribution function are obtain...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2000-01-01
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| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/7/159/2000/npg-7-159-2000.pdf |
| _version_ | 1818127294297800704 |
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| author | A. Greco A. Greco P. Veltri P. Veltri G. Zimbardo G. Zimbardo A. L. Taktakishvilli L. M. Zelenyi |
| author_facet | A. Greco A. Greco P. Veltri P. Veltri G. Zimbardo G. Zimbardo A. L. Taktakishvilli L. M. Zelenyi |
| author_sort | A. Greco |
| collection | DOAJ |
| description | The ion dynamics in the distant Earth's magnetotail is studied in the case that a cross tail electric field and reconnection parity magnetic turbulence are present in the neutral sheet. A test particle simulation is performed for the ions, and moments of the ion distribution function are obtained as a function of the magnetic fluctuation level, δB/B<sub>0</sub>, and of the value of the cross tail electric field, E<sub>y</sub>. It is found that magnetic turbulence can split the current carrying region into a double current sheet, in agreement with inferences from observations in the distant magnetotail. The problem of ion conductivity is addressed by varying the value of the cross tail electric field from zero to the observed one: we find that Ohm's law is not enforced, and that a non local, system dependent conductivity is necessary to describe the ion response to the electric field. Also, it appears that the relation between current and electric field may be nonlinear. |
| first_indexed | 2024-12-11T07:15:04Z |
| format | Article |
| id | doaj.art-9e93c433a6bd452aa3fd3d4449298a40 |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-12-11T07:15:04Z |
| publishDate | 2000-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-9e93c433a6bd452aa3fd3d4449298a402022-12-22T01:16:16ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462000-01-0173/4159166Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivityA. GrecoA. GrecoP. VeltriP. VeltriG. ZimbardoG. ZimbardoA. L. TaktakishvilliL. M. ZelenyiThe ion dynamics in the distant Earth's magnetotail is studied in the case that a cross tail electric field and reconnection parity magnetic turbulence are present in the neutral sheet. A test particle simulation is performed for the ions, and moments of the ion distribution function are obtained as a function of the magnetic fluctuation level, δB/B<sub>0</sub>, and of the value of the cross tail electric field, E<sub>y</sub>. It is found that magnetic turbulence can split the current carrying region into a double current sheet, in agreement with inferences from observations in the distant magnetotail. The problem of ion conductivity is addressed by varying the value of the cross tail electric field from zero to the observed one: we find that Ohm's law is not enforced, and that a non local, system dependent conductivity is necessary to describe the ion response to the electric field. Also, it appears that the relation between current and electric field may be nonlinear.http://www.nonlin-processes-geophys.net/7/159/2000/npg-7-159-2000.pdf |
| spellingShingle | A. Greco A. Greco P. Veltri P. Veltri G. Zimbardo G. Zimbardo A. L. Taktakishvilli L. M. Zelenyi Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity Nonlinear Processes in Geophysics |
| title | Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity |
| title_full | Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity |
| title_fullStr | Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity |
| title_full_unstemmed | Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity |
| title_short | Numerical simulation of ion dynamics in the magnetotail magnetic turbulence: On collisionless conductivity |
| title_sort | numerical simulation of ion dynamics in the magnetotail magnetic turbulence on collisionless conductivity |
| url | http://www.nonlin-processes-geophys.net/7/159/2000/npg-7-159-2000.pdf |
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