Shay M A, Swisdak M
Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA.
Phys Rev Lett. 2004 Oct 22;93(17):175001. doi: 10.1103/PhysRevLett.93.175001. Epub 2004 Oct 18.
The nature of collisionless reconnection in a three-species plasma composed of a heavy species, protons, and electrons is examined. In addition to the usual two length scales present in two-species reconnection, there are two additional larger length scales in the system: one associated with a "heavy whistler" which produces a large scale quadrupolar out-of-plane magnetic field, and one associated with the "heavy Alfvén" wave which can slow the outflow speed and thus the reconnection rate. The consequences for reconnection with O+ present in the magnetotail are discussed.
研究了由重粒子、质子和电子组成的三物种等离子体中无碰撞重联的性质。除了两物种重联中通常存在的两个长度尺度外，该系统中还有另外两个更大的长度尺度：一个与产生大规模四极面外磁场的“重哨声波”相关，另一个与可减慢流出速度从而降低重联率的“重阿尔文”波相关。讨论了磁尾中存在O+时重联的后果。
