| Perpendicular diffusion of energetic particles: Numerical test of the theorem on reduced dimensionality | |
Qin, G. ; Shalchi, A.; Qin, G (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China.
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| Department | 空间科学部 |
| Source Publication | PHYSICS OF PLASMAS
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| 2015 | |
| Volume | 22Issue:1Pages:12905 |
| ISSN | 1070-664X |
| Language | 英语 |
| Abstract | A fundamental statement in diffusion theory is provided by the so-called theorem on reduced dimensionality. The latter theorem is saying that if the dimensionality of the turbulence is reduced, charged particles are tied to a single magnetic field line. If there is pitch-angle scattering and therewith parallel diffusion, this usually means that perpendicular transport is subdiffusive. Subdiffusive transport was found in numerous simulations for slab turbulence. However, it was unclear whether the theorem is valid for other models with reduced dimensionality such as the two-dimensional model. In the current paper, we simultaneously trace magnetic field lines and energetic particles and we compute the distance between the particle and the initial field line. We confirm the aforementioned theorem for slab turbulence but we cannot confirm it for two-dimensional turbulence. We also show that particles are not tied to field lines for two-component turbulence. (C) 2015 AIP Publishing LLC. |
| Indexed By | SCI ; EI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/4609 |
| Collection | 空间科学部 |
| Corresponding Author | Qin, G (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Qin, G.,Shalchi, A.,Qin, G . Perpendicular diffusion of energetic particles: Numerical test of the theorem on reduced dimensionality[J]. PHYSICS OF PLASMAS,2015,22(1):12905. |
| APA | Qin, G.,Shalchi, A.,&Qin, G .(2015).Perpendicular diffusion of energetic particles: Numerical test of the theorem on reduced dimensionality.PHYSICS OF PLASMAS,22(1),12905. |
| MLA | Qin, G.,et al."Perpendicular diffusion of energetic particles: Numerical test of the theorem on reduced dimensionality".PHYSICS OF PLASMAS 22.1(2015):12905. |
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| 201522112905.pdf（761KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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