中文

阿尔芬波传播:磁化等离子体中非局域效应的关键

等离子体物理 2014-03-21 v2

摘要

聚变研究中一个长期存在的谜题源于此类实验:突然的周边电子温度扰动伴随着几乎同步的中心温度反向变化,这与局域输运模型不相容。本文表明,正如早期工作 [V.D. Pustovitov, Plasma Phys. Control. Fusion {\bf 54}, 124036 (2012)] 所建议的那样,当在标准的局域扩散输运之外将感应效应纳入等离子体总响应时,这些实验及类似实验能在相当好的程度上被定量复现。

关键词

引用

@article{arxiv.1307.6877,
  title  = {Alfvenic propagation: a key to nonlocal effects in magnetized plasmas},
  author = {F. Sattin and D. F. Escande},
  journal= {arXiv preprint arXiv:1307.6877},
  year   = {2014}
}

备注

After the publication of the paper we became aware of a fundamental error in the normalization of our equations. While at some places, plasma pressure was normalized to the magnetic energy density, at other places, plasma pressure and the plasma pressure source were normalized to the {\it equilibrium} plasma pressure. This involves that a $\beta$ factor was missing in some of the equations. By an unfortunate coincidence the different sources of error largely masked each other in the final results, thereby allowing the model to provide seemingly accurate conclusions. The correction of this error implies that the alleged MHD effects are smaller by a factor $\beta$, and cannot account for the phenomenology observed. This invalidates our conclusions