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Subdiffusive transport of charged particles perpendicular to the large scale magnetic field
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Geophysical Research Letters, 29, 2002, 4 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Qin, G. Matthaeus, W. H. Bieber, J. W. Qin, G. Matthaeus, W. H. Bieber, J. W. |
|---|---|
| author |
Qin, G. Matthaeus, W. H. Bieber, J. W. |
| spellingShingle |
Qin, G. Matthaeus, W. H. Bieber, J. W. Geophysical Research Letters Subdiffusive transport of charged particles perpendicular to the large scale magnetic field General Earth and Planetary Sciences Geophysics |
| author_sort |
qin, g. |
| spelling |
Qin, G. Matthaeus, W. H. Bieber, J. W. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2001gl014035 <jats:p>Transport of charged particles across the mean magnetic field due to broad band, powerlaw‐distributed magnetic fluctuations is examined by direct computation of a large number of charged test particle trajectories. Fluctuations consist of a one dimensional slab spectrum with an additional 0.01 percent level of two dimensional fluctuations; the net field has no ignorable directions. We find that, at long times (<jats:italic>t</jats:italic>), the mean square displacements subdiffusively scale as ∼<jats:italic>t</jats:italic><jats:sup>1/2</jats:sup>. This confirms that perpendicular diffusion is suppressed when turbulence lacks strong three dimensional structure, in agreement with theories of Urch and of Kóta and Jokipii.</jats:p> Subdiffusive transport of charged particles perpendicular to the large scale magnetic field Geophysical Research Letters |
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Geophysical Research Letters |
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| title |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_unstemmed |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_full |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_fullStr |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_full_unstemmed |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_short |
Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_sort |
subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1029/2001gl014035 |
| publishDate |
2002 |
| physical |
|
| description |
<jats:p>Transport of charged particles across the mean magnetic field due to broad band, powerlaw‐distributed magnetic fluctuations is examined by direct computation of a large number of charged test particle trajectories. Fluctuations consist of a one dimensional slab spectrum with an additional 0.01 percent level of two dimensional fluctuations; the net field has no ignorable directions. We find that, at long times (<jats:italic>t</jats:italic>), the mean square displacements subdiffusively scale as ∼<jats:italic>t</jats:italic><jats:sup>1/2</jats:sup>. This confirms that perpendicular diffusion is suppressed when turbulence lacks strong three dimensional structure, in agreement with theories of Urch and of Kóta and Jokipii.</jats:p> |
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| author | Qin, G., Matthaeus, W. H., Bieber, J. W. |
| author_facet | Qin, G., Matthaeus, W. H., Bieber, J. W., Qin, G., Matthaeus, W. H., Bieber, J. W. |
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| description | <jats:p>Transport of charged particles across the mean magnetic field due to broad band, powerlaw‐distributed magnetic fluctuations is examined by direct computation of a large number of charged test particle trajectories. Fluctuations consist of a one dimensional slab spectrum with an additional 0.01 percent level of two dimensional fluctuations; the net field has no ignorable directions. We find that, at long times (<jats:italic>t</jats:italic>), the mean square displacements subdiffusively scale as ∼<jats:italic>t</jats:italic><jats:sup>1/2</jats:sup>. This confirms that perpendicular diffusion is suppressed when turbulence lacks strong three dimensional structure, in agreement with theories of Urch and of Kóta and Jokipii.</jats:p> |
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| series | Geophysical Research Letters |
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| spelling | Qin, G. Matthaeus, W. H. Bieber, J. W. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1029/2001gl014035 <jats:p>Transport of charged particles across the mean magnetic field due to broad band, powerlaw‐distributed magnetic fluctuations is examined by direct computation of a large number of charged test particle trajectories. Fluctuations consist of a one dimensional slab spectrum with an additional 0.01 percent level of two dimensional fluctuations; the net field has no ignorable directions. We find that, at long times (<jats:italic>t</jats:italic>), the mean square displacements subdiffusively scale as ∼<jats:italic>t</jats:italic><jats:sup>1/2</jats:sup>. This confirms that perpendicular diffusion is suppressed when turbulence lacks strong three dimensional structure, in agreement with theories of Urch and of Kóta and Jokipii.</jats:p> Subdiffusive transport of charged particles perpendicular to the large scale magnetic field Geophysical Research Letters |
| spellingShingle | Qin, G., Matthaeus, W. H., Bieber, J. W., Geophysical Research Letters, Subdiffusive transport of charged particles perpendicular to the large scale magnetic field, General Earth and Planetary Sciences, Geophysics |
| title | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_full | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_fullStr | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_full_unstemmed | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_short | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_sort | subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| title_unstemmed | Subdiffusive transport of charged particles perpendicular to the large scale magnetic field |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1029/2001gl014035 |