Formation of a vortex crystal cell assisted by a background vorticity distribution.
Formation of a vortex crystal cell assisted by a background vorticity distribution.
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在背景涡度分布的辅助下形成涡旋晶胞。
DOI：
10.1103/physreve.68.016404
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Y. Soga
中科院分区：
文献类型：
--
作者：
A. Sanpei;Y. Kiwamoto;K. Ito;Y. Soga
涡旋晶体是一种准静止的、对称的强涡旋（团块）阵列。实验观察到低水平的背景涡度有助于三个团块从线性阵列上的初始位置形成等边三角形。这个三角形构成了多涡系统中晶体的一个晶胞。背景涡旋以不相等的强度抑制团块的轨道运动，通过用不同大小的耗尽涡度带（环孔）包裹它们，将它们困在等边三角形的顶点。结合实验结果和现有理论，探讨了低水平背景涡度分布对团块有序态形成的影响。
A vortex crystal is a quasistationary, symmetric array of intense vortices (clumps). A low level of background vorticity is experimentally observed to assist three clumps in forming an equilateral triangle starting from initial positions on a linear array. The triangle constitutes a unit cell of a crystal in a many-vortex system. The background vortex curbs the orbital motion of the clumps with unequal strengths to arrest them at the vertices of an equilateral triangle by wrapping them with different sized belts of depleted vorticity (ring holes). We characterize the contributions of a low-level background vorticity distribution on the formation of ordered states of clumps in light of the experimental results and existing theories.