Traveling pairs of spots in a periodically driven gas discharge system: Collective motion caused by interaction

被引：70

作者：

Brauer, I ^{[1
]}

Bode, M ^{[1
]}

Ammelt, E ^{[1
]}

Purwins, HG ^{[1
]}

机构：

[1] Univ Munster, Dept Appl Phys, D-48149 Munster, Germany

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.84.4104

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on a new type of interaction between solitary current density spots observed in an ac-driven gas discharge system. These spots behave as independent particles as long as they are far apart from each other. Upon collision, in most cases one of the spots is extinguished, However, we also observe the formation of stable bound pairs of spots that move rather fast. We argue that both the rapid motion and the binding itself are due to a pronounced symmetry breaking with respect to size and breakdown phase of the individual spots. Basic features of pairs of spots traveling due to a true two-spot mechanism are discussed.

引用

页码：4104 / 4107

页数：4

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